101010021200020 has 24 divisors (see below), whose sum is σ = 212157980342784. Its totient is φ = 40396973085216.

The previous prime is 101010021199991. The next prime is 101010021200027. The reversal of 101010021200020 is 20002120010101.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101010021200027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439594444 + ... + 439824163.

It is an arithmetic number, because the mean of its divisors is an integer number (8839915847616).

Almost surely, 2^{101010021200020} is an apocalyptic number.

101010021200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101010021200020 is an abundant number, since it is smaller than the sum of its proper divisors (111147959142764).

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

101010021200020 is a wasteful number, since it uses less digits than its factorization.

101010021200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879424359 (or 879424357 counting only the distinct ones).

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

Adding to 101010021200020 its reverse (20002120010101), we get a palindrome (121012141210121).

The spelling of 101010021200020 in words is "one hundred one trillion, ten billion, twenty-one million, two hundred thousand, twenty".