121385374667 has 4 divisors (see below), whose sum is σ = 121407689496. Its totient is φ = 121363059840.

The previous prime is 121385374661. The next prime is 121385374679. The reversal of 121385374667 is 766473583121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766473583121 = 403511 ⋅1899511.

It is a cyclic number.

It is not a de Polignac number, because 121385374667 - 2¹⁶ = 121385309131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121385374661) 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, 11149253 + ... + 11160134.

It is an arithmetic number, because the mean of its divisors is an integer number (30351922374).

Almost surely, 2^121385374667 is an apocalyptic number.

121385374667 is a deficient number, since it is larger than the sum of its proper divisors (22314829).

121385374667 is an equidigital number, since it uses as much as digits as its factorization.

121385374667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22314828.

The product of its digits is 5080320, while the sum is 53.

The spelling of 121385374667 in words is "one hundred twenty-one billion, three hundred eighty-five million, three hundred seventy-four thousand, six hundred sixty-seven".