Search a number
-
+
1210222020020 = 2251343108248839
BaseRepresentation
bin10001100111000110110…
…110101000010110110100
311021200210110020112022112
4101213012312220112310
5124312013314120040
62323545053550152
7153302300303456
oct21470666502664
94250713215275
101210222020020
11427285864022
12176670aa5358
138a17b29c170
1442809d622d6
1521732302365
hex119c6da85b4

1210222020020 has 48 divisors (see below), whose sum is σ = 2800613988480. Its totient is φ = 436459314816.

The previous prime is 1210222020011. The next prime is 1210222020037. The reversal of 1210222020020 is 200202220121.

It is a junction number, because it is equal to n+sod(n) for n = 1210222019977 and 1210222020004.

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, 54113240 + ... + 54135599.

It is an arithmetic number, because the mean of its divisors is an integer number (58346124760).

Almost surely, 21210222020020 is an apocalyptic number.

1210222020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210222020020 is an abundant number, since it is smaller than the sum of its proper divisors (1590391968460).

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

1210222020020 is a wasteful number, since it uses less digits than its factorization.

1210222020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108248904 (or 108248902 counting only the distinct ones).

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

Adding to 1210222020020 its reverse (200202220121), we get a palindrome (1410424240141).

The spelling of 1210222020020 in words is "one trillion, two hundred ten billion, two hundred twenty-two million, twenty thousand, twenty".

Divisors: 1 2 4 5 10 13 20 26 43 52 65 86 130 172 215 260 430 559 860 1118 2236 2795 5590 11180 108248839 216497678 432995356 541244195 1082488390 1407234907 2164976780 2814469814 4654700077 5628939628 7036174535 9309400154 14072349070 18618800308 23273500385 28144698140 46547000770 60511101001 93094001540 121022202002 242044404004 302555505005 605111010010 1210222020020