102221000010 has 48 divisors (see below), whose sum is σ = 272957706216. Its totient is φ = 26522204544.

The previous prime is 102220999999. The next prime is 102221000093. The reversal of 102221000010 is 10000122201.

It can be written as a sum of positive squares in 4 ways, for example, as 80697469329 + 21523530681 = 284073^2 + 146709^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 102220999956 and 102221000001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15345169 + ... + 15351828.

Almost surely, 2^102221000010 is an apocalyptic number.

102221000010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102221000010 is an abundant number, since it is smaller than the sum of its proper divisors (170736706206).

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

102221000010 is a wasteful number, since it uses less digits than its factorization.

102221000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30697047 (or 30697044 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 102221000010 its reverse (10000122201), we get a palindrome (112221122211).

The spelling of 102221000010 in words is "one hundred two billion, two hundred twenty-one million, ten", and thus it is an aban number.