102123200211220 has 48 divisors (see below), whose sum is σ = 216125023676688. Its totient is φ = 40532167562240.

The previous prime is 102123200211211. The next prime is 102123200211317. The reversal of 102123200211220 is 22112002321201.

It can be written as a sum of positive squares in 8 ways, for example, as 13551837163524 + 88571363047696 = 3681282^2 + 9411236^2 .

It is a super-2 number, since 2×102123200211220² (a number of 29 digits) contains 22 as substring.

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, 2837827 + ... + 14570506.

It is an arithmetic number, because the mean of its divisors is an integer number (4502604659931).

Almost surely, 2^{102123200211220} is an apocalyptic number.

102123200211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102123200211220 is an abundant number, since it is smaller than the sum of its proper divisors (114001823465468).

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

102123200211220 is a wasteful number, since it uses less digits than its factorization.

102123200211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17410620 (or 17410618 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 102123200211220 its reverse (22112002321201), we get a palindrome (124235202532421).

The spelling of 102123200211220 in words is "one hundred two trillion, one hundred twenty-three billion, two hundred million, two hundred eleven thousand, two hundred twenty".