12222121023 has 40 divisors (see below), whose sum is σ = 20877576192. Its totient is φ = 6980189904.

The previous prime is 12222121001. The next prime is 12222121031. The reversal of 12222121023 is 32012122221.

It is not a de Polignac number, because 12222121023 - 2⁵ = 12222120991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12222120987 and 12222121005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222121073) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1246486 + ... + 1256252.

Almost surely, 2^12222121023 is an apocalyptic number.

12222121023 is a deficient number, since it is larger than the sum of its proper divisors (8655455169).

12222121023 is an equidigital number, since it uses as much as digits as its factorization.

12222121023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11993 (or 11984 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 12222121023 its reverse (32012122221), we get a palindrome (44234243244).

The spelling of 12222121023 in words is "twelve billion, two hundred twenty-two million, one hundred twenty-one thousand, twenty-three".