121432311223 has 4 divisors (see below), whose sum is σ = 121551480360. Its totient is φ = 121313142088.

The previous prime is 121432311197. The next prime is 121432311251. The reversal of 121432311223 is 322113234121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322113234121 = 7 ⋅46016176303.

It is a cyclic number.

It is not a de Polignac number, because 121432311223 - 2²¹ = 121430214071 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 (121432381223) 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, 59583040 + ... + 59585077.

It is an arithmetic number, because the mean of its divisors is an integer number (30387870090).

Almost surely, 2^121432311223 is an apocalyptic number.

121432311223 is a deficient number, since it is larger than the sum of its proper divisors (119169137).

121432311223 is a wasteful number, since it uses less digits than its factorization.

121432311223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119169136.

The product of its digits is 1728, while the sum is 25.

Adding to 121432311223 its reverse (322113234121), we get a palindrome (443545545344).

The spelling of 121432311223 in words is "one hundred twenty-one billion, four hundred thirty-two million, three hundred eleven thousand, two hundred twenty-three".