23151252221051 has 4 divisors (see below), whose sum is σ = 23151427160400. Its totient is φ = 23151077281704.

The previous prime is 23151252221023. The next prime is 23151252221081. The reversal of 23151252221051 is 15012225215132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23151252221051 - 2¹⁰ = 23151252220027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23151252220999 and 23151252221017.

It is not an unprimeable number, because it can be changed into a prime (23151252221081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87271016 + ... + 87535893.

It is an arithmetic number, because the mean of its divisors is an integer number (5787856790100).

Almost surely, 2^{23151252221051} is an apocalyptic number.

23151252221051 is a deficient number, since it is larger than the sum of its proper divisors (174939349).

23151252221051 is a wasteful number, since it uses less digits than its factorization.

23151252221051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174939348.

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 23151252221051 its reverse (15012225215132), we get a palindrome (38163477436183).

The spelling of 23151252221051 in words is "twenty-three trillion, one hundred fifty-one billion, two hundred fifty-two million, two hundred twenty-one thousand, fifty-one".