121312212023 has 4 divisors (see below), whose sum is σ = 126586656048. Its totient is φ = 116037768000.

The previous prime is 121312212013. The next prime is 121312212067. The reversal of 121312212023 is 320212213121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121312212023 - 2⁸ = 121312211767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121312211986 and 121312212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121312212013) 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, 2637221978 + ... + 2637222023.

It is an arithmetic number, because the mean of its divisors is an integer number (31646664012).

Almost surely, 2^121312212023 is an apocalyptic number.

121312212023 is a deficient number, since it is larger than the sum of its proper divisors (5274444025).

121312212023 is an equidigital number, since it uses as much as digits as its factorization.

121312212023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5274444024.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121312212023 its reverse (320212213121), we get a palindrome (441524425144).

The spelling of 121312212023 in words is "one hundred twenty-one billion, three hundred twelve million, two hundred twelve thousand, twenty-three".