101022221020 has 36 divisors (see below), whose sum is σ = 246782856600. Its totient is φ = 34636189728.

The previous prime is 101022220961. The next prime is 101022221039. The reversal of 101022221020 is 20122220101.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51540970 + ... + 51542929.

It is an arithmetic number, because the mean of its divisors is an integer number (6855079350).

Almost surely, 2^101022221020 is an apocalyptic number.

101022221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101022221020 is an abundant number, since it is smaller than the sum of its proper divisors (145760635580).

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

101022221020 is a wasteful number, since it uses less digits than its factorization.

101022221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103083922 (or 103083913 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 101022221020 its reverse (20122220101), we get a palindrome (121144441121).

The spelling of 101022221020 in words is "one hundred one billion, twenty-two million, two hundred twenty-one thousand, twenty".