20101001202100 has 72 divisors (see below), whose sum is σ = 53685135542528. Its totient is φ = 6361635542400.

The previous prime is 20101001202031. The next prime is 20101001202137. The reversal of 20101001202100 is 120210010102.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1104441516 + ... + 1104459715.

Almost surely, 2^{20101001202100} is an apocalyptic number.

20101001202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101001202100 is an abundant number, since it is smaller than the sum of its proper divisors (33584134340428).

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

20101001202100 is a wasteful number, since it uses less digits than its factorization.

20101001202100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208901265 (or 2208901258 counting only the distinct ones).

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

Adding to 20101001202100 its reverse (120210010102), we get a palindrome (20221211212202).

The spelling of 20101001202100 in words is "twenty trillion, one hundred one billion, one million, two hundred two thousand, one hundred".