100202100020001 has 24 divisors (see below), whose sum is σ = 165418382273664. Its totient is φ = 57256476488640.

The previous prime is 100202100019933. The next prime is 100202100020017. The reversal of 100202100020001 is 100020001202001.

It is not a de Polignac number, because 100202100020001 - 2¹⁸ = 100202099757857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100202100020801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23972685 + ... + 27840506.

It is an arithmetic number, because the mean of its divisors is an integer number (6892432594736).

Almost surely, 2^{100202100020001} is an apocalyptic number.

It is an amenable number.

100202100020001 is a deficient number, since it is larger than the sum of its proper divisors (65216282253663).

100202100020001 is a wasteful number, since it uses less digits than its factorization.

100202100020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51843901 (or 51843898 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 100202100020001 its reverse (100020001202001), we get a palindrome (200222101222002).

The spelling of 100202100020001 in words is "one hundred trillion, two hundred two billion, one hundred million, twenty thousand, one".