2100001120100 has 72 divisors (see below), whose sum is σ = 4980788167488. Its totient is φ = 763812086400.

The previous prime is 2100001120099. The next prime is 2100001120153. The reversal of 2100001120100 is 10211000012.

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, 11968016 + ... + 12142215.

Almost surely, 2^{2100001120100} is an apocalyptic number.

2100001120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100001120100 is an abundant number, since it is smaller than the sum of its proper divisors (2880787047388).

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

2100001120100 is a wasteful number, since it uses less digits than its factorization.

2100001120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24110325 (or 24110318 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 2100001120100 its reverse (10211000012), we get a palindrome (2110212120112).

The spelling of 2100001120100 in words is "two trillion, one hundred billion, one million, one hundred twenty thousand, one hundred".