121012131 has 8 divisors (see below), whose sum is σ = 168364800. Its totient is φ = 77167112.

The previous prime is 121012123. The next prime is 121012139. The reversal of 121012131 is 131210121.

It is an interprime number because it is at equal distance from previous prime (121012123) and next prime (121012139).

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 121012131 - 2³ = 121012123 is a prime.

It is a super-2 number, since 2×121012131² = 29287871698322322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121012139) 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, 876831 + ... + 876968.

It is an arithmetic number, because the mean of its divisors is an integer number (21045600).

Almost surely, 2^121012131 is an apocalyptic number.

121012131 is a deficient number, since it is larger than the sum of its proper divisors (47352669).

121012131 is a wasteful number, since it uses less digits than its factorization.

121012131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753825.

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

The square root of 121012131 is about 11000.5513952711. The cubic root of 121012131 is about 494.6252729700.

Adding to 121012131 its reverse (131210121), we get a palindrome (252222252).

The spelling of 121012131 in words is "one hundred twenty-one million, twelve thousand, one hundred thirty-one".