121373834057 has 4 divisors (see below), whose sum is σ = 138712953216. Its totient is φ = 104034714900.

The previous prime is 121373834033. The next prime is 121373834059. The reversal of 121373834057 is 750438373121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121373834057 - 2¹⁰ = 121373833033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121373833999 and 121373834017.

It is not an unprimeable number, because it can be changed into a prime (121373834059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8669559569 + ... + 8669559582.

It is an arithmetic number, because the mean of its divisors is an integer number (34678238304).

Almost surely, 2^121373834057 is an apocalyptic number.

It is an amenable number.

121373834057 is a deficient number, since it is larger than the sum of its proper divisors (17339119159).

121373834057 is an equidigital number, since it uses as much as digits as its factorization.

121373834057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17339119158.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 121373834057 in words is "one hundred twenty-one billion, three hundred seventy-three million, eight hundred thirty-four thousand, fifty-seven".