21100122211201 has 32 divisors (see below), whose sum is σ = 23477045391360. Its totient is φ = 18803631288000.

The previous prime is 21100122211187. The next prime is 21100122211219. The reversal of 21100122211201 is 10211222100112.

It is a cyclic number.

It is not a de Polignac number, because 21100122211201 - 2⁵ = 21100122211169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21100122241201) 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, 209054190 + ... + 209155096.

It is an arithmetic number, because the mean of its divisors is an integer number (733657668480).

Almost surely, 2^{21100122211201} is an apocalyptic number.

It is an amenable number.

21100122211201 is a deficient number, since it is larger than the sum of its proper divisors (2376923180159).

21100122211201 is a wasteful number, since it uses less digits than its factorization.

21100122211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102885.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21100122211201 its reverse (10211222100112), we get a palindrome (31311344311313).

The spelling of 21100122211201 in words is "twenty-one trillion, one hundred billion, one hundred twenty-two million, two hundred eleven thousand, two hundred one".