100201202020 has 24 divisors (see below), whose sum is σ = 210689930304. Its totient is φ = 40029546336.

The previous prime is 100201201979. The next prime is 100201202021. The reversal of 100201202020 is 20202102001.

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

It is a junction number, because it is equal to n+sod(n) for n = 100201201988 and 100201202006.

It is not an unprimeable number, because it can be changed into a prime (100201202021) 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, 3167272 + ... + 3198751.

It is an arithmetic number, because the mean of its divisors is an integer number (8778747096).

Almost surely, 2^100201202020 is an apocalyptic number.

100201202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100201202020 is an abundant number, since it is smaller than the sum of its proper divisors (110488728284).

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

100201202020 is a wasteful number, since it uses less digits than its factorization.

100201202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6366819 (or 6366817 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 100201202020 its reverse (20202102001), we get a palindrome (120403304021).

The spelling of 100201202020 in words is "one hundred billion, two hundred one million, two hundred two thousand, twenty".