4431215132121 has 48 divisors (see below), whose sum is σ = 6291133935360. Its totient is φ = 2773852231680.

The previous prime is 4431215132117. The next prime is 4431215132129. The reversal of 4431215132121 is 1212315121344.

It is not a de Polignac number, because 4431215132121 - 2² = 4431215132117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4431215132129) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56605035 + ... + 56683263.

It is an arithmetic number, because the mean of its divisors is an integer number (131065290320).

Almost surely, 2^{4431215132121} is an apocalyptic number.

It is an amenable number.

4431215132121 is a deficient number, since it is larger than the sum of its proper divisors (1859918803239).

4431215132121 is a wasteful number, since it uses less digits than its factorization.

4431215132121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78734 (or 78715 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The spelling of 4431215132121 in words is "four trillion, four hundred thirty-one billion, two hundred fifteen million, one hundred thirty-two thousand, one hundred twenty-one".