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1011011212220 = 225191264662621
BaseRepresentation
bin11101011011001001111…
…01101101001110111100
310120122121002221221222212
432231210331231032330
5113031022332242340
62052241354555552
7133020541340402
oct16554475551674
93518532857885
101011011212220
1135a849521689
12143b35738bb8
137445161a729
1436d0c9d5472
151b4732bca65
hexeb64f6d3bc

1011011212220 has 24 divisors (see below), whose sum is σ = 2134239383808. Its totient is φ = 402287182400.

The previous prime is 1011011212219. The next prime is 1011011212397. The reversal of 1011011212220 is 222121101101.

It is a junction number, because it is equal to n+sod(n) for n = 1011011212195 and 1011011212204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132327491 + ... + 132335130.

It is an arithmetic number, because the mean of its divisors is an integer number (88926640992).

Almost surely, 21011011212220 is an apocalyptic number.

1011011212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011011212220 is an abundant number, since it is smaller than the sum of its proper divisors (1123228171588).

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

1011011212220 is a wasteful number, since it uses less digits than its factorization.

1011011212220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264662821 (or 264662819 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1011011212220 its reverse (222121101101), we get a palindrome (1233132313321).

The spelling of 1011011212220 in words is "one trillion, eleven billion, eleven million, two hundred twelve thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 191 382 764 955 1910 3820 264662621 529325242 1058650484 1323313105 2646626210 5293252420 50550560611 101101121222 202202242444 252752803055 505505606110 1011011212220