121004131 has 4 divisors (see below), whose sum is σ = 121133664. Its totient is φ = 120874600.

The previous prime is 121004119. The next prime is 121004137. The reversal of 121004131 is 131400121.

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 121004131 - 2¹⁷ = 120873059 is a prime.

It is a super-2 number, since 2×121004131² = 29283999438130322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121004137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63355 + ... + 65236.

It is an arithmetic number, because the mean of its divisors is an integer number (30283416).

Almost surely, 2^121004131 is an apocalyptic number.

121004131 is a deficient number, since it is larger than the sum of its proper divisors (129533).

121004131 is an equidigital number, since it uses as much as digits as its factorization.

121004131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129532.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121004131 is about 11000.1877711246. The cubic root of 121004131 is about 494.6143729901.

Adding to 121004131 its reverse (131400121), we get a palindrome (252404252).

The spelling of 121004131 in words is "one hundred twenty-one million, four thousand, one hundred thirty-one".