121331231133309 has 24 divisors (see below), whose sum is σ = 181579756700160. Its totient is φ = 77977555319328.

The previous prime is 121331231133283. The next prime is 121331231133311. The reversal of 121331231133309 is 903331132133121.

121331231133309 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 3 + 1 + 2 + 311 + 3 + 330 + 9 = 666.

It is not a de Polignac number, because 121331231133309 - 2¹⁷ = 121331231002237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121331231133319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 359081997 + ... + 359419730.

It is an arithmetic number, because the mean of its divisors is an integer number (7565823195840).

Almost surely, 2^{121331231133309} is an apocalyptic number.

It is an amenable number.

121331231133309 is a deficient number, since it is larger than the sum of its proper divisors (60248525566851).

121331231133309 is a wasteful number, since it uses less digits than its factorization.

121331231133309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718502409 (or 718502406 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The spelling of 121331231133309 in words is "one hundred twenty-one trillion, three hundred thirty-one billion, two hundred thirty-one million, one hundred thirty-three thousand, three hundred nine".