22021210139 has 2 divisors, whose sum is σ = 22021210140. Its totient is φ = 22021210138.

The previous prime is 22021210129. The next prime is 22021210213. The reversal of 22021210139 is 93101212022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22021210139 - 2²⁰ = 22020161563 is a prime.

It is not a weakly prime, because it can be changed into another prime (22021210129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010605069 + 11010605070.

It is an arithmetic number, because the mean of its divisors is an integer number (11010605070).

Almost surely, 2^22021210139 is an apocalyptic number.

22021210139 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021210139 is an equidigital number, since it uses as much as digits as its factorization.

22021210139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 22021210139 in words is "twenty-two billion, twenty-one million, two hundred ten thousand, one hundred thirty-nine".