102221101000 has 32 divisors (see below), whose sum is σ = 239197378680. Its totient is φ = 40888440000.

The previous prime is 102221100991. The next prime is 102221101019. The reversal of 102221101000 is 101122201.

It can be written as a sum of positive squares in 4 ways, for example, as 25754472324 + 76466628676 = 160482^2 + 276526^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51109551 + ... + 51111550.

Almost surely, 2^102221101000 is an apocalyptic number.

102221101000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102221101000 is an abundant number, since it is smaller than the sum of its proper divisors (136976277680).

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

102221101000 is a wasteful number, since it uses less digits than its factorization.

102221101000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102221122 (or 102221108 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 102221101000 its reverse (101122201), we get a palindrome (102322223201).

The spelling of 102221101000 in words is "one hundred two billion, two hundred twenty-one million, one hundred one thousand".