102220021112 has 128 divisors (see below), whose sum is σ = 220600074240. Its totient is φ = 43952388480.

The previous prime is 102220021069. The next prime is 102220021139. The reversal of 102220021112 is 211120022201.

It is a super-2 number, since 2×102220021112² (a number of 23 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 31 ways as a sum of consecutive naturals, for example, 140604893 + ... + 140605619.

It is an arithmetic number, because the mean of its divisors is an integer number (1723438080).

Almost surely, 2^102220021112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102220021112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110300037120).

102220021112 is an abundant number, since it is smaller than the sum of its proper divisors (118380053128).

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

102220021112 is a wasteful number, since it uses less digits than its factorization.

102220021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441 (or 1437 counting only the distinct ones).

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

Adding to 102220021112 its reverse (211120022201), we get a palindrome (313340043313).

The spelling of 102220021112 in words is "one hundred two billion, two hundred twenty million, twenty-one thousand, one hundred twelve".