2120122122091 has 2 divisors, whose sum is σ = 2120122122092. Its totient is φ = 2120122122090.

The previous prime is 2120122122029. The next prime is 2120122122127. The reversal of 2120122122091 is 1902212210212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2120122122091 - 2¹⁷ = 2120121991019 is a prime.

It is a super-2 number, since 2×2120122122091² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2120122122011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060061061045 + 1060061061046.

It is an arithmetic number, because the mean of its divisors is an integer number (1060061061046).

Almost surely, 2^{2120122122091} is an apocalyptic number.

2120122122091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120122122091 is an equidigital number, since it uses as much as digits as its factorization.

2120122122091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 2120122122091 in words is "two trillion, one hundred twenty billion, one hundred twenty-two million, one hundred twenty-two thousand, ninety-one".