121433975894 has 24 divisors (see below), whose sum is σ = 231152616648. Its totient is φ = 47311938240.

The previous prime is 121433975869. The next prime is 121433975903. The reversal of 121433975894 is 498579334121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56322659 + ... + 56324814.

It is an arithmetic number, because the mean of its divisors is an integer number (9631359027).

Almost surely, 2^121433975894 is an apocalyptic number.

121433975894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

121433975894 is a deficient number, since it is larger than the sum of its proper divisors (109718640754).

121433975894 is a wasteful number, since it uses less digits than its factorization.

121433975894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112647500 (or 112647493 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The spelling of 121433975894 in words is "one hundred twenty-one billion, four hundred thirty-three million, nine hundred seventy-five thousand, eight hundred ninety-four".