121433066251155 has 32 divisors (see below), whose sum is σ = 215882196390720. Its totient is φ = 64763945084160.

The previous prime is 121433066251141. The next prime is 121433066251207. The reversal of 121433066251155 is 551152660334121.

It is a happy number.

121433066251155 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 3 + 3 + 0 + 6 + 625 + 1 + 15 + 5 = 666.

It is not a de Polignac number, because 121433066251155 - 2⁴ = 121433066251139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 121433066251155.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23081185 + ... + 27849725.

It is an arithmetic number, because the mean of its divisors is an integer number (6746318637210).

Almost surely, 2^{121433066251155} is an apocalyptic number.

121433066251155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121433066251155 is a deficient number, since it is larger than the sum of its proper divisors (94449130139565).

121433066251155 is a wasteful number, since it uses less digits than its factorization.

121433066251155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4957188 (or 4957182 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 121433066251155 in words is "one hundred twenty-one trillion, four hundred thirty-three billion, sixty-six million, two hundred fifty-one thousand, one hundred fifty-five".