121200131 has 8 divisors (see below), whose sum is σ = 131023200. Its totient is φ = 111448512.

The previous prime is 121200109. The next prime is 121200139. The reversal of 121200131 is 131002121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121200131 - 2¹⁰ = 121199107 is a prime.

It is a super-2 number, since 2×121200131² = 29378943508834322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121200139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14306 + ... + 21143.

It is an arithmetic number, because the mean of its divisors is an integer number (16377900).

Almost surely, 2^121200131 is an apocalyptic number.

121200131 is a deficient number, since it is larger than the sum of its proper divisors (9823069).

121200131 is a wasteful number, since it uses less digits than its factorization.

121200131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35725.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 121200131 is about 11009.0931052471. The cubic root of 121200131 is about 494.8812843219.

Adding to 121200131 its reverse (131002121), we get a palindrome (252202252).

The spelling of 121200131 in words is "one hundred twenty-one million, two hundred thousand, one hundred thirty-one".