121123212023 has 16 divisors (see below), whose sum is σ = 135704488320. Its totient is φ = 107173908000.

The previous prime is 121123212017. The next prime is 121123212029. The reversal of 121123212023 is 320212321121.

It is an interprime number because it is at equal distance from previous prime (121123212017) and next prime (121123212029).

It is a cyclic number.

It is not a de Polignac number, because 121123212023 - 2⁶ = 121123211959 is a prime.

It is a super-2 number, since 2×121123212023² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121123211986 and 121123212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121123212029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 858365 + ... + 989462.

It is an arithmetic number, because the mean of its divisors is an integer number (8481530520).

Almost surely, 2^121123212023 is an apocalyptic number.

121123212023 is a deficient number, since it is larger than the sum of its proper divisors (14581276297).

121123212023 is a wasteful number, since it uses less digits than its factorization.

121123212023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847998.

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

Adding to 121123212023 its reverse (320212321121), we get a palindrome (441335533144).

The spelling of 121123212023 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred twelve thousand, twenty-three".