121161651 has 32 divisors (see below), whose sum is σ = 184880640. Its totient is φ = 69963264.

The previous prime is 121161647. The next prime is 121161697. The reversal of 121161651 is 156161121.

It is not a de Polignac number, because 121161651 - 2² = 121161647 is a prime.

It is a super-3 number, since 3×121161651³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (121161151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83010 + ... + 84456.

It is an arithmetic number, because the mean of its divisors is an integer number (5777520).

Almost surely, 2^121161651 is an apocalyptic number.

121161651 is a deficient number, since it is larger than the sum of its proper divisors (63718989).

121161651 is a wasteful number, since it uses less digits than its factorization.

121161651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595.

The product of its digits is 360, while the sum is 24.

The square root of 121161651 is about 11007.3453202850. The cubic root of 121161651 is about 494.8289052600.

The spelling of 121161651 in words is "one hundred twenty-one million, one hundred sixty-one thousand, six hundred fifty-one".