101220101102020 has 48 divisors (see below), whose sum is σ = 216577233392688. Its totient is φ = 39723305656320.

The previous prime is 101220101102017. The next prime is 101220101102039. The reversal of 101220101102020 is 20201101022101.

It can be written as a sum of positive squares in 8 ways, for example, as 19398361284 + 101200702740736 = 139278^2 + 10059856^2 .

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, 52451860 + ... + 54347380.

It is an arithmetic number, because the mean of its divisors is an integer number (4512025695681).

Almost surely, 2^{101220101102020} is an apocalyptic number.

101220101102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101220101102020 is an abundant number, since it is smaller than the sum of its proper divisors (115357132290668).

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

101220101102020 is a wasteful number, since it uses less digits than its factorization.

101220101102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945960 (or 1945958 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101220101102020 its reverse (20201101022101), we get a palindrome (121421202124121).

The spelling of 101220101102020 in words is "one hundred one trillion, two hundred twenty billion, one hundred one million, one hundred two thousand, twenty".