22397843121 has 4 divisors (see below), whose sum is σ = 29863790832. Its totient is φ = 14931895412.

The previous prime is 22397843101. The next prime is 22397843147. The reversal of 22397843121 is 12134879322.

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 22397843121 - 2¹⁰ = 22397842097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22397843101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3732973851 + ... + 3732973856.

It is an arithmetic number, because the mean of its divisors is an integer number (7465947708).

Almost surely, 2^22397843121 is an apocalyptic number.

It is an amenable number.

22397843121 is a deficient number, since it is larger than the sum of its proper divisors (7465947711).

22397843121 is an equidigital number, since it uses as much as digits as its factorization.

22397843121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7465947710.

The product of its digits is 145152, while the sum is 42.

The spelling of 22397843121 in words is "twenty-two billion, three hundred ninety-seven million, eight hundred forty-three thousand, one hundred twenty-one".