1022022120991 has 2 divisors, whose sum is σ = 1022022120992. Its totient is φ = 1022022120990.

The previous prime is 1022022120983. The next prime is 1022022121063. The reversal of 1022022120991 is 1990212202201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1022022120991 - 2³ = 1022022120983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1022022120961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511011060495 + 511011060496.

It is an arithmetic number, because the mean of its divisors is an integer number (511011060496).

Almost surely, 2^{1022022120991} is an apocalyptic number.

1022022120991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022022120991 is an equidigital number, since it uses as much as digits as its factorization.

1022022120991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 1022022120991 in words is "one trillion, twenty-two billion, twenty-two million, one hundred twenty thousand, nine hundred ninety-one".