22220021020931 has 2 divisors, whose sum is σ = 22220021020932. Its totient is φ = 22220021020930.

The previous prime is 22220021020889. The next prime is 22220021021083. The reversal of 22220021020931 is 13902012002222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22220021020931 - 2¹⁰ = 22220021019907 is a prime.

It is a super-2 number, since 2×22220021020931² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22220021020931.

It is not a weakly prime, because it can be changed into another prime (22220021920931) 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 as a sum of consecutive naturals, namely, 11110010510465 + 11110010510466.

It is an arithmetic number, because the mean of its divisors is an integer number (11110010510466).

Almost surely, 2^{22220021020931} is an apocalyptic number.

22220021020931 is a deficient number, since it is larger than the sum of its proper divisors (1).

22220021020931 is an equidigital number, since it uses as much as digits as its factorization.

22220021020931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 22220021020931 in words is "twenty-two trillion, two hundred twenty billion, twenty-one million, twenty thousand, nine hundred thirty-one".