121146396631 has 4 divisors (see below), whose sum is σ = 130465350232. Its totient is φ = 111827443032.

The previous prime is 121146396617. The next prime is 121146396653. The reversal of 121146396631 is 136693641121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121146396631 - 2³⁵ = 86786658263 is a prime.

It is a super-3 number, since 3×121146396631³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121146396611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4659476781 + ... + 4659476806.

It is an arithmetic number, because the mean of its divisors is an integer number (32616337558).

Almost surely, 2^121146396631 is an apocalyptic number.

121146396631 is a deficient number, since it is larger than the sum of its proper divisors (9318953601).

121146396631 is an equidigital number, since it uses as much as digits as its factorization.

121146396631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9318953600.

The product of its digits is 139968, while the sum is 43.

The spelling of 121146396631 in words is "one hundred twenty-one billion, one hundred forty-six million, three hundred ninety-six thousand, six hundred thirty-one".