22122300021 has 4 divisors (see below), whose sum is σ = 29496400032. Its totient is φ = 14748200012.

The previous prime is 22122300007. The next prime is 22122300043. The reversal of 22122300021 is 12000322122.

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 22122300021 - 2⁶ = 22122299957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122301021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3687050001 + ... + 3687050006.

It is an arithmetic number, because the mean of its divisors is an integer number (7374100008).

Almost surely, 2^22122300021 is an apocalyptic number.

It is an amenable number.

22122300021 is a deficient number, since it is larger than the sum of its proper divisors (7374100011).

22122300021 is an equidigital number, since it uses as much as digits as its factorization.

22122300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7374100010.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 22122300021 its reverse (12000322122), we get a palindrome (34122622143).

The spelling of 22122300021 in words is "twenty-two billion, one hundred twenty-two million, three hundred thousand, twenty-one".