10122121200021 has 16 divisors (see below), whose sum is σ = 13647667084800. Its totient is φ = 6672734239680.

The previous prime is 10122121200017. The next prime is 10122121200031. The reversal of 10122121200021 is 12000212122101.

It is not a de Polignac number, because 10122121200021 - 2² = 10122121200017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10122121200031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50672890 + ... + 50872251.

It is an arithmetic number, because the mean of its divisors is an integer number (852979192800).

Almost surely, 2^{10122121200021} is an apocalyptic number.

It is an amenable number.

10122121200021 is a deficient number, since it is larger than the sum of its proper divisors (3525545884779).

10122121200021 is a wasteful number, since it uses less digits than its factorization.

10122121200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101545516.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10122121200021 its reverse (12000212122101), we get a palindrome (22122333322122).

The spelling of 10122121200021 in words is "ten trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred thousand, twenty-one".