102021220112 has 40 divisors (see below), whose sum is σ = 225940259136. Its totient is φ = 43716387456.

The previous prime is 102021220109. The next prime is 102021220117. The reversal of 102021220112 is 211022120201.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (102021220117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663698 + ... + 802830.

Almost surely, 2^102021220112 is an apocalyptic number.

It is an amenable number.

102021220112 is an abundant number, since it is smaller than the sum of its proper divisors (123919039024).

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

102021220112 is a wasteful number, since it uses less digits than its factorization.

102021220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145695 (or 145689 counting only the distinct ones).

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

Adding to 102021220112 its reverse (211022120201), we get a palindrome (313043340313).

The spelling of 102021220112 in words is "one hundred two billion, twenty-one million, two hundred twenty thousand, one hundred twelve".