23451121111 has 32 divisors (see below), whose sum is σ = 26493235200. Its totient is φ = 20576112480.

The previous prime is 23451121097. The next prime is 23451121117. The reversal of 23451121111 is 11112115432.

It is not a de Polignac number, because 23451121111 - 2⁵ = 23451121079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23451121117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16479346 + ... + 16480768.

It is an arithmetic number, because the mean of its divisors is an integer number (827913600).

Almost surely, 2^23451121111 is an apocalyptic number.

23451121111 is a deficient number, since it is larger than the sum of its proper divisors (3042114089).

23451121111 is a wasteful number, since it uses less digits than its factorization.

23451121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939.

The product of its digits is 240, while the sum is 22.

Adding to 23451121111 its reverse (11112115432), we get a palindrome (34563236543).

The spelling of 23451121111 in words is "twenty-three billion, four hundred fifty-one million, one hundred twenty-one thousand, one hundred eleven".