102221100002120 has 128 divisors (see below), whose sum is σ = 256325803050240. Its totient is φ = 36372185840640.

The previous prime is 102221100002089. The next prime is 102221100002183. The reversal of 102221100002120 is 21200001122201.

It is a junction number, because it is equal to n+sod(n) for n = 102221100002095 and 102221100002104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2822477 + ... + 14574243.

It is an arithmetic number, because the mean of its divisors is an integer number (2002545336330).

Almost surely, 2^{102221100002120} is an apocalyptic number.

102221100002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102221100002120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128162901525120).

102221100002120 is an abundant number, since it is smaller than the sum of its proper divisors (154104703048120).

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

102221100002120 is a wasteful number, since it uses less digits than its factorization.

102221100002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11752215 (or 11752211 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102221100002120 its reverse (21200001122201), we get a palindrome (123421101124321).

The spelling of 102221100002120 in words is "one hundred two trillion, two hundred twenty-one billion, one hundred million, two thousand, one hundred twenty".