102221122120 has 64 divisors (see below), whose sum is σ = 256230702000. Its totient is φ = 36441689088.

The previous prime is 102221122103. The next prime is 102221122127. The reversal of 102221122120 is 21221122201.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 46136462436 + 56084659684 = 214794^2 + 236822^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102221122094 and 102221122103.

It is not an unprimeable number, because it can be changed into a prime (102221122127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3374215 + ... + 3404374.

Almost surely, 2^102221122120 is an apocalyptic number.

102221122120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102221122120 is an abundant number, since it is smaller than the sum of its proper divisors (154009579880).

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

102221122120 is a wasteful number, since it uses less digits than its factorization.

102221122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6778642 (or 6778638 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102221122120 its reverse (21221122201), we get a palindrome (123442244321).

The spelling of 102221122120 in words is "one hundred two billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred twenty".