221422002921989 has 2 divisors, whose sum is σ = 221422002921990. Its totient is φ = 221422002921988.

The previous prime is 221422002921979. The next prime is 221422002921997. The reversal of 221422002921989 is 989129200224122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193766678400100 + 27655324521889 = 13920010^2 + 5258833^2 .

It is a cyclic number.

It is not a de Polignac number, because 221422002921989 - 2²⁴ = 221421986144773 is a prime.

It is a super-2 number, since 2×221422002921989² (a number of 29 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 221422002921989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221422002921979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110711001460994 + 110711001460995.

It is an arithmetic number, because the mean of its divisors is an integer number (110711001460995).

Almost surely, 2^{221422002921989} is an apocalyptic number.

It is an amenable number.

221422002921989 is a deficient number, since it is larger than the sum of its proper divisors (1).

221422002921989 is an equidigital number, since it uses as much as digits as its factorization.

221422002921989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 221422002921989 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, two million, nine hundred twenty-one thousand, nine hundred eighty-nine".