1022220121999 has 2 divisors, whose sum is σ = 1022220122000. Its totient is φ = 1022220121998.

The previous prime is 1022220121963. The next prime is 1022220122003. The reversal of 1022220121999 is 9991210222201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1022220121999 - 2²³ = 1022211733391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022220121099) 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, 511110060999 + 511110061000.

It is an arithmetic number, because the mean of its divisors is an integer number (511110061000).

Almost surely, 2^{1022220121999} is an apocalyptic number.

1022220121999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022220121999 is an equidigital number, since it uses as much as digits as its factorization.

1022220121999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 1022220121999 in words is "one trillion, twenty-two billion, two hundred twenty million, one hundred twenty-one thousand, nine hundred ninety-nine".