121123213023 has 8 divisors (see below), whose sum is σ = 164145119536. Its totient is φ = 79425057600.

The previous prime is 121123212997. The next prime is 121123213027. The reversal of 121123213023 is 320312321121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121123213023 - 2⁸ = 121123212767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121123213027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330937558 + ... + 330937923.

It is an arithmetic number, because the mean of its divisors is an integer number (20518139942).

Almost surely, 2^121123213023 is an apocalyptic number.

121123213023 is a deficient number, since it is larger than the sum of its proper divisors (43021906513).

121123213023 is an equidigital number, since it uses as much as digits as its factorization.

121123213023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661875545.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121123213023 its reverse (320312321121), we get a palindrome (441435534144).

The spelling of 121123213023 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred thirteen thousand, twenty-three".