12135222023 has 2 divisors, whose sum is σ = 12135222024. Its totient is φ = 12135222022.

The previous prime is 12135221977. The next prime is 12135222097. The reversal of 12135222023 is 32022253121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12135222023 - 2²² = 12131027719 is a prime.

It is a super-2 number, since 2×12135222023² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12135222023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12135222623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6067611011 + 6067611012.

It is an arithmetic number, because the mean of its divisors is an integer number (6067611012).

Almost surely, 2^12135222023 is an apocalyptic number.

12135222023 is a deficient number, since it is larger than the sum of its proper divisors (1).

12135222023 is an equidigital number, since it uses as much as digits as its factorization.

12135222023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 12135222023 its reverse (32022253121), we get a palindrome (44157475144).

The spelling of 12135222023 in words is "twelve billion, one hundred thirty-five million, two hundred twenty-two thousand, twenty-three".