21222230112001 has 16 divisors (see below), whose sum is σ = 22351803572160. Its totient is φ = 20093921242560.

The previous prime is 21222230111977. The next prime is 21222230112011. The reversal of 21222230112001 is 10021103222212.

It is not a de Polignac number, because 21222230112001 - 2²⁷ = 21222095894273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21222230112001.

It is not an unprimeable number, because it can be changed into a prime (21222230112011) 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, 261713475 + ... + 261794551.

It is an arithmetic number, because the mean of its divisors is an integer number (1396987723260).

Almost surely, 2^{21222230112001} is an apocalyptic number.

It is an amenable number.

21222230112001 is a deficient number, since it is larger than the sum of its proper divisors (1129573460159).

21222230112001 is a wasteful number, since it uses less digits than its factorization.

21222230112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88704.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21222230112001 its reverse (10021103222212), we get a palindrome (31243333334213).

The spelling of 21222230112001 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred thirty million, one hundred twelve thousand, one".