2110121101091 has 2 divisors, whose sum is σ = 2110121101092. Its totient is φ = 2110121101090.

The previous prime is 2110121101063. The next prime is 2110121101133. The reversal of 2110121101091 is 1901011210112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2110121101091 - 2⁶ = 2110121101027 is a prime.

It is a super-2 number, since 2×2110121101091² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2110121101021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055060550545 + 1055060550546.

It is an arithmetic number, because the mean of its divisors is an integer number (1055060550546).

Almost surely, 2^{2110121101091} is an apocalyptic number.

2110121101091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2110121101091 is an equidigital number, since it uses as much as digits as its factorization.

2110121101091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 2110121101091 in words is "two trillion, one hundred ten billion, one hundred twenty-one million, one hundred one thousand, ninety-one".