23001220133 has 12 divisors (see below), whose sum is σ = 25222019712. Its totient is φ = 20949869760.

The previous prime is 23001220117. The next prime is 23001220141. The reversal of 23001220133 is 33102210032.

It is not a de Polignac number, because 23001220133 - 2⁴ = 23001220117 is a prime.

It is a super-2 number, since 2×23001220133² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23001220103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1274735 + ... + 1292652.

It is an arithmetic number, because the mean of its divisors is an integer number (2101834976).

Almost surely, 2^23001220133 is an apocalyptic number.

It is an amenable number.

23001220133 is a deficient number, since it is larger than the sum of its proper divisors (2220799579).

23001220133 is a wasteful number, since it uses less digits than its factorization.

23001220133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567452 (or 2567435 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 23001220133 its reverse (33102210032), we get a palindrome (56103430165).

The spelling of 23001220133 in words is "twenty-three billion, one million, two hundred twenty thousand, one hundred thirty-three".