120121001100191 has 24 divisors (see below), whose sum is σ = 148662068147424. Its totient is φ = 95035343869440.

The previous prime is 120121001100169. The next prime is 120121001100193. The reversal of 120121001100191 is 191001100121021.

It is not a de Polignac number, because 120121001100191 - 2²² = 120120996905887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121001100193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17797331 + ... + 23600571.

It is an arithmetic number, because the mean of its divisors is an integer number (6194252839476).

Almost surely, 2^{120121001100191} is an apocalyptic number.

120121001100191 is a deficient number, since it is larger than the sum of its proper divisors (28541067047233).

120121001100191 is a wasteful number, since it uses less digits than its factorization.

120121001100191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5820771 (or 5820758 counting only the distinct ones).

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

The spelling of 120121001100191 in words is "one hundred twenty trillion, one hundred twenty-one billion, one million, one hundred thousand, one hundred ninety-one".