100020001210021 has 32 divisors (see below), whose sum is σ = 103284214403328. Its totient is φ = 96825232465920.

The previous prime is 100020001210013. The next prime is 100020001210027. The reversal of 100020001210021 is 120012100020001.

It is a cyclic number.

It is not a de Polignac number, because 100020001210021 - 2³ = 100020001210013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100020001210027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1000120006 + ... + 1000220008.

It is an arithmetic number, because the mean of its divisors is an integer number (3227631700104).

Almost surely, 2^{100020001210021} is an apocalyptic number.

It is an amenable number.

100020001210021 is a deficient number, since it is larger than the sum of its proper divisors (3264213193307).

100020001210021 is a wasteful number, since it uses less digits than its factorization.

100020001210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101341.

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

Adding to 100020001210021 its reverse (120012100020001), we get a palindrome (220032101230022).

The spelling of 100020001210021 in words is "one hundred trillion, twenty billion, one million, two hundred ten thousand, twenty-one".