101221220022020 has 96 divisors (see below), whose sum is σ = 257494336888320. Its totient is φ = 32628270274560.

The previous prime is 101221220022017. The next prime is 101221220022053. The reversal of 101221220022020 is 20220022122101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 101221220022020.

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, 20358680 + ... + 24837839.

It is an arithmetic number, because the mean of its divisors is an integer number (2682232675920).

Almost surely, 2^{101221220022020} is an apocalyptic number.

101221220022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101221220022020 is an abundant number, since it is smaller than the sum of its proper divisors (156273116866300).

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

101221220022020 is a wasteful number, since it uses less digits than its factorization.

101221220022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45197493 (or 45197491 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 101221220022020 its reverse (20220022122101), we get a palindrome (121441242144121).

The spelling of 101221220022020 in words is "one hundred one trillion, two hundred twenty-one billion, two hundred twenty million, twenty-two thousand, twenty".