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12020012020220 = 2256611607565793
BaseRepresentation
bin1010111011101010000010…
…0010111111000111111100
31120120002202022020001200112
42232322200202333013330
53033413441034121340
641321530045045152
72350263050251541
oct256724042770774
946502668201615
1012020012020220
113914727473896
1214216858567b8
13692636715779
142d7ab3712bc8
1515ca04c63065
hexaeea08bf1fc

12020012020220 has 48 divisors (see below), whose sum is σ = 25295988892608. Its totient is φ = 4797735106560.

The previous prime is 12020012020199. The next prime is 12020012020249. The reversal of 12020012020220 is 2202021002021.

It is a junction number, because it is equal to n+sod(n) for n = 12020012020195 and 12020012020204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20961644 + ... + 21527436.

It is an arithmetic number, because the mean of its divisors is an integer number (526999768596).

Almost surely, 212020012020220 is an apocalyptic number.

12020012020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020012020220 is an abundant number, since it is smaller than the sum of its proper divisors (13275976872388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12020012020220 is a wasteful number, since it uses less digits than its factorization.

12020012020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568070 (or 568068 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12020012020220 its reverse (2202021002021), we get a palindrome (14222033022241).

The spelling of 12020012020220 in words is "twelve trillion, twenty billion, twelve million, twenty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 661 1322 1607 2644 3214 3305 6428 6610 8035 13220 16070 32140 565793 1062227 1131586 2124454 2263172 2828965 4248908 5311135 5657930 10622270 11315860 21244540 373989173 747978346 909229351 1495956692 1818458702 1869945865 3636917404 3739891730 4546146755 7479783460 9092293510 18184587020 601000601011 1202001202022 2404002404044 3005003005055 6010006010110 12020012020220