111212223023 has 4 divisors (see below), whose sum is σ = 121322425128. Its totient is φ = 101102020920.

The previous prime is 111212222969. The next prime is 111212223037. The reversal of 111212223023 is 320322212111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320322212111 = 11 ⋅29120201101.

It is a cyclic number.

It is not a de Polignac number, because 111212223023 - 2³⁴ = 94032353839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111212222986 and 111212223004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212223623) 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, 5055101036 + ... + 5055101057.

It is an arithmetic number, because the mean of its divisors is an integer number (30330606282).

Almost surely, 2^111212223023 is an apocalyptic number.

111212223023 is a deficient number, since it is larger than the sum of its proper divisors (10110202105).

111212223023 is a wasteful number, since it uses less digits than its factorization.

111212223023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110202104.

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

Adding to 111212223023 its reverse (320322212111), we get a palindrome (431534435134).

The spelling of 111212223023 in words is "one hundred eleven billion, two hundred twelve million, two hundred twenty-three thousand, twenty-three".