22210101121991 has 2 divisors, whose sum is σ = 22210101121992. Its totient is φ = 22210101121990.

The previous prime is 22210101121969. The next prime is 22210101122009. The reversal of 22210101121991 is 19912110101222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22210101121991 - 2¹⁰ = 22210101120967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22210101121291) 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, 11105050560995 + 11105050560996.

It is an arithmetic number, because the mean of its divisors is an integer number (11105050560996).

Almost surely, 2^{22210101121991} is an apocalyptic number.

22210101121991 is a deficient number, since it is larger than the sum of its proper divisors (1).

22210101121991 is an equidigital number, since it uses as much as digits as its factorization.

22210101121991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 32.

The spelling of 22210101121991 in words is "twenty-two trillion, two hundred ten billion, one hundred one million, one hundred twenty-one thousand, nine hundred ninety-one".