102221001000 has 128 divisors (see below), whose sum is σ = 354366230400. Its totient is φ = 27258926400.

The previous prime is 102221000989. The next prime is 102221001011. The reversal of 102221001000 is 100122201.

It is an interprime number because it is at equal distance from previous prime (102221000989) and next prime (102221001011).

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

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, 1865982 + ... + 1919981.

It is an arithmetic number, because the mean of its divisors is an integer number (2768486175).

Almost surely, 2^102221001000 is an apocalyptic number.

102221001000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102221001000 is an abundant number, since it is smaller than the sum of its proper divisors (252145229400).

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

102221001000 is a wasteful number, since it uses less digits than its factorization.

102221001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3785993 (or 3785973 counting only the distinct ones).

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

Adding to 102221001000 its reverse (100122201), we get a palindrome (102321123201).

The spelling of 102221001000 in words is "one hundred two billion, two hundred twenty-one million, one thousand".