121333143993 has 16 divisors (see below), whose sum is σ = 176164276800. Its totient is φ = 73988994240.

The previous prime is 121333143983. The next prime is 121333144003. The reversal of 121333143993 is 399341333121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121333143983) and next prime (121333144003).

It is not a de Polignac number, because 121333143993 - 2²⁴ = 121316366777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121333143923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36699238 + ... + 36702543.

It is an arithmetic number, because the mean of its divisors is an integer number (11010267300).

Almost surely, 2^121333143993 is an apocalyptic number.

It is an amenable number.

121333143993 is a deficient number, since it is larger than the sum of its proper divisors (54831132807).

121333143993 is a wasteful number, since it uses less digits than its factorization.

121333143993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73401832.

The product of its digits is 157464, while the sum is 42.

The spelling of 121333143993 in words is "one hundred twenty-one billion, three hundred thirty-three million, one hundred forty-three thousand, nine hundred ninety-three".