22021219939 has 2 divisors, whose sum is σ = 22021219940. Its totient is φ = 22021219938.

The previous prime is 22021219937. The next prime is 22021219951. The reversal of 22021219939 is 93991212022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22021219939 - 2¹ = 22021219937 is a prime.

It is a super-2 number, since 2×22021219939² (a number of 21 digits) contains 22 as substring.

Together with 22021219937, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22021219933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010609969 + 11010609970.

It is an arithmetic number, because the mean of its divisors is an integer number (11010609970).

Almost surely, 2^22021219939 is an apocalyptic number.

22021219939 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021219939 is an equidigital number, since it uses as much as digits as its factorization.

22021219939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 22021219939 in words is "twenty-two billion, twenty-one million, two hundred nineteen thousand, nine hundred thirty-nine".