121140691 has 24 divisors (see below), whose sum is σ = 152890416. Its totient is φ = 95316480.

The previous prime is 121140689. The next prime is 121140707. The reversal of 121140691 is 196041121.

It is not a de Polignac number, because 121140691 - 2¹ = 121140689 is a prime.

It is a super-3 number, since 3×121140691³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121140611) 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, 32380 + ... + 35926.

It is an arithmetic number, because the mean of its divisors is an integer number (6370434).

Almost surely, 2^121140691 is an apocalyptic number.

121140691 is a deficient number, since it is larger than the sum of its proper divisors (31749725).

121140691 is a wasteful number, since it uses less digits than its factorization.

121140691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3619 (or 3612 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 121140691 is about 11006.3931875978. The cubic root of 121140691 is about 494.8003697955.

The spelling of 121140691 in words is "one hundred twenty-one million, one hundred forty thousand, six hundred ninety-one".