121131441 has 12 divisors (see below), whose sum is σ = 184176720. Its totient is φ = 76503960.

The previous prime is 121131433. The next prime is 121131481. The reversal of 121131441 is 144131121.

It is not a de Polignac number, because 121131441 - 2³ = 121131433 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121131431) 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 11 ways as a sum of consecutive naturals, for example, 354015 + ... + 354356.

It is an arithmetic number, because the mean of its divisors is an integer number (15348060).

Almost surely, 2^121131441 is an apocalyptic number.

It is an amenable number.

121131441 is a deficient number, since it is larger than the sum of its proper divisors (63045279).

121131441 is a wasteful number, since it uses less digits than its factorization.

121131441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708396 (or 708393 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 121131441 is about 11005.9729692563. The cubic root of 121131441 is about 494.7877755689.

Adding to 121131441 its reverse (144131121), we get a palindrome (265262562).

The spelling of 121131441 in words is "one hundred twenty-one million, one hundred thirty-one thousand, four hundred forty-one".