22101022110021 has 4 divisors (see below), whose sum is σ = 29468029480032. Its totient is φ = 14734014740012.

The previous prime is 22101022109983. The next prime is 22101022110113. The reversal of 22101022110021 is 12001122010122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22101022110021 - 2¹¹ = 22101022107973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101022110221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3683503685001 + ... + 3683503685006.

It is an arithmetic number, because the mean of its divisors is an integer number (7367007370008).

Almost surely, 2^{22101022110021} is an apocalyptic number.

It is an amenable number.

22101022110021 is a deficient number, since it is larger than the sum of its proper divisors (7367007370011).

22101022110021 is an equidigital number, since it uses as much as digits as its factorization.

22101022110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7367007370010.

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

Adding to 22101022110021 its reverse (12001122010122), we get a palindrome (34102144120143).

The spelling of 22101022110021 in words is "twenty-two trillion, one hundred one billion, twenty-two million, one hundred ten thousand, twenty-one".