102221021000 has 64 divisors (see below), whose sum is σ = 273368234880. Its totient is φ = 35047204800.

The previous prime is 102221020987. The next prime is 102221021011. The reversal of 102221021000 is 120122201.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7294502 + ... + 7308501.

It is an arithmetic number, because the mean of its divisors is an integer number (4271378670).

Almost surely, 2^102221021000 is an apocalyptic number.

102221021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102221021000 is an abundant number, since it is smaller than the sum of its proper divisors (171147213880).

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

102221021000 is a wasteful number, since it uses less digits than its factorization.

102221021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14603031 (or 14603017 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 102221021000 its reverse (120122201), we get a palindrome (102341143201).

The spelling of 102221021000 in words is "one hundred two billion, two hundred twenty-one million, twenty-one thousand".