20211201002100 has 36 divisors (see below), whose sum is σ = 58477741566944. Its totient is φ = 5389653600480.

The previous prime is 20211201002087. The next prime is 20211201002101. The reversal of 20211201002100 is 120010211202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211201002101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33685334704 + ... + 33685335303.

Almost surely, 2^{20211201002100} is an apocalyptic number.

20211201002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211201002100 is an abundant number, since it is smaller than the sum of its proper divisors (38266540564844).

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

20211201002100 is a wasteful number, since it uses less digits than its factorization.

20211201002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67370670024 (or 67370670017 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20211201002100 its reverse (120010211202), we get a palindrome (20331211213302).

The spelling of 20211201002100 in words is "twenty trillion, two hundred eleven billion, two hundred one million, two thousand, one hundred".