102221112210 has 64 divisors (see below), whose sum is σ = 280680249600. Its totient is φ = 23339630592.

The previous prime is 102221112187. The next prime is 102221112211. The reversal of 102221112210 is 12211122201.

It is a super-2 number, since 2×102221112210² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 102221112210.

It is not an unprimeable number, because it can be changed into a prime (102221112211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66895 + ... + 457074.

It is an arithmetic number, because the mean of its divisors is an integer number (4385628900).

Almost surely, 2^102221112210 is an apocalyptic number.

102221112210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102221112210 is an abundant number, since it is smaller than the sum of its proper divisors (178459137390).

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

102221112210 is a wasteful number, since it uses less digits than its factorization.

102221112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524915.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102221112210 its reverse (12211122201), we get a palindrome (114432234411).

Subtracting from 102221112210 its reverse (12211122201), we obtain a palindrome (90009990009).

The spelling of 102221112210 in words is "one hundred two billion, two hundred twenty-one million, one hundred twelve thousand, two hundred ten".