22010122021 has 4 divisors (see below), whose sum is σ = 22967083872. Its totient is φ = 21053160172.

The previous prime is 22010122009. The next prime is 22010122061. The reversal of 22010122021 is 12022101022.

It is a happy number.

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 22010122021 - 2¹⁷ = 22009990949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22010121992 and 22010122010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010122061) 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, 478480891 + ... + 478480936.

It is an arithmetic number, because the mean of its divisors is an integer number (5741770968).

Almost surely, 2^22010122021 is an apocalyptic number.

It is an amenable number.

22010122021 is a deficient number, since it is larger than the sum of its proper divisors (956961851).

22010122021 is an equidigital number, since it uses as much as digits as its factorization.

22010122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956961850.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22010122021 its reverse (12022101022), we get a palindrome (34032223043).

The spelling of 22010122021 in words is "twenty-two billion, ten million, one hundred twenty-two thousand, twenty-one".