23151121005 has 32 divisors (see below), whose sum is σ = 38260085760. Its totient is φ = 11941655040.

The previous prime is 23151121003. The next prime is 23151121013. The reversal of 23151121005 is 50012115132.

It is not a de Polignac number, because 23151121005 - 2¹ = 23151121003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23151121003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 791481 + ... + 820209.

It is an arithmetic number, because the mean of its divisors is an integer number (1195627680).

Almost surely, 2^23151121005 is an apocalyptic number.

It is an amenable number.

23151121005 is a deficient number, since it is larger than the sum of its proper divisors (15108964755).

23151121005 is a wasteful number, since it uses less digits than its factorization.

23151121005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30501.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 23151121005 its reverse (50012115132), we get a palindrome (73163236137).

The spelling of 23151121005 in words is "twenty-three billion, one hundred fifty-one million, one hundred twenty-one thousand, five".