100102221020 has 48 divisors (see below), whose sum is σ = 212585999808. Its totient is φ = 39590000640.

The previous prime is 100102221001. The next prime is 100102221097. The reversal of 100102221020 is 20122201001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 100102220992 and 100102221010.

It is a congruent 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, 2037950 + ... + 2086490.

It is an arithmetic number, because the mean of its divisors is an integer number (4428874996).

Almost surely, 2^100102221020 is an apocalyptic number.

100102221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100102221020 is an abundant number, since it is smaller than the sum of its proper divisors (112483778788).

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

100102221020 is a wasteful number, since it uses less digits than its factorization.

100102221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49710 (or 49708 counting only the distinct ones).

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

Adding to 100102221020 its reverse (20122201001), we get a palindrome (120224422021).

The spelling of 100102221020 in words is "one hundred billion, one hundred two million, two hundred twenty-one thousand, twenty".