21210122200001 has 32 divisors (see below), whose sum is σ = 25739493728256. Its totient is φ = 17086057560000.

The previous prime is 21210122199989. The next prime is 21210122200021. The reversal of 21210122200001 is 10000222101212.

It is a cyclic number.

It is not a de Polignac number, because 21210122200001 - 2²² = 21210118005697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21210122200021) 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, 2848265 + ... + 7108646.

It is an arithmetic number, because the mean of its divisors is an integer number (804359179008).

Almost surely, 2^{21210122200001} is an apocalyptic number.

It is an amenable number.

21210122200001 is a deficient number, since it is larger than the sum of its proper divisors (4529371528255).

21210122200001 is a wasteful number, since it uses less digits than its factorization.

21210122200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9957173.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21210122200001 its reverse (10000222101212), we get a palindrome (31210344301213).

The spelling of 21210122200001 in words is "twenty-one trillion, two hundred ten billion, one hundred twenty-two million, two hundred thousand, one".