2022011011991 has 2 divisors, whose sum is σ = 2022011011992. Its totient is φ = 2022011011990.

The previous prime is 2022011011981. The next prime is 2022011012011. The reversal of 2022011011991 is 1991101102202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2022011011991 - 2³⁴ = 2004831142807 is a prime.

It is a super-2 number, since 2×2022011011991² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2022011011981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011005505995 + 1011005505996.

It is an arithmetic number, because the mean of its divisors is an integer number (1011005505996).

Almost surely, 2^{2022011011991} is an apocalyptic number.

2022011011991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2022011011991 is an equidigital number, since it uses as much as digits as its factorization.

2022011011991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 29.

The spelling of 2022011011991 in words is "two trillion, twenty-two billion, eleven million, eleven thousand, nine hundred ninety-one".