1022220999973 has 2 divisors, whose sum is σ = 1022220999974. Its totient is φ = 1022220999972.

The previous prime is 1022220999967. The next prime is 1022221000001. The reversal of 1022220999973 is 3799990222201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 697027953924 + 325193046049 = 834882^2 + 570257^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022220999973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022220999673) 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, 511110499986 + 511110499987.

It is an arithmetic number, because the mean of its divisors is an integer number (511110499987).

Almost surely, 2^{1022220999973} is an apocalyptic number.

It is an amenable number.

1022220999973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022220999973 is an equidigital number, since it uses as much as digits as its factorization.

1022220999973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2204496, while the sum is 55.

The spelling of 1022220999973 in words is "one trillion, twenty-two billion, two hundred twenty million, nine hundred ninety-nine thousand, nine hundred seventy-three".