23122122121 has 16 divisors (see below), whose sum is σ = 26837637120. Its totient is φ = 19511838720.

The previous prime is 23122122073. The next prime is 23122122131. The reversal of 23122122121 is 12122122132.

It is a cyclic number.

It is not a de Polignac number, because 23122122121 - 2²¹ = 23120024969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23122122131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40545 + ... + 218833.

It is an arithmetic number, because the mean of its divisors is an integer number (1677352320).

Almost surely, 2^23122122121 is an apocalyptic number.

It is an amenable number.

23122122121 is a deficient number, since it is larger than the sum of its proper divisors (3715514999).

23122122121 is a wasteful number, since it uses less digits than its factorization.

23122122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178584.

The product of its digits is 192, while the sum is 19.

Adding to 23122122121 its reverse (12122122132), we get a palindrome (35244244253).

The spelling of 23122122121 in words is "twenty-three billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".