22010020111021 has 4 divisors (see below), whose sum is σ = 22042245616992. Its totient is φ = 21977794605052.

The previous prime is 22010020110977. The next prime is 22010020111061. The reversal of 22010020111021 is 12011102001022.

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 22010020111021 - 2¹⁹ = 22010019586733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22010020110992 and 22010020111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010020111061) 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, 16112751961 + ... + 16112753326.

It is an arithmetic number, because the mean of its divisors is an integer number (5510561404248).

Almost surely, 2^{22010020111021} is an apocalyptic number.

It is an amenable number.

22010020111021 is a deficient number, since it is larger than the sum of its proper divisors (32225505971).

22010020111021 is an equidigital number, since it uses as much as digits as its factorization.

22010020111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32225505970.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22010020111021 its reverse (12011102001022), we get a palindrome (34021122112043).

The spelling of 22010020111021 in words is "twenty-two trillion, ten billion, twenty million, one hundred eleven thousand, twenty-one".