22501232251123 has 4 divisors (see below), whose sum is σ = 23479546696848. Its totient is φ = 21522917805400.

The previous prime is 22501232251097. The next prime is 22501232251129. The reversal of 22501232251123 is 32115223210522.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22501232251123 is a prime.

It is a super-2 number, since 2×22501232251123² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22501232251129) 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, 489157222828 + ... + 489157222873.

It is an arithmetic number, because the mean of its divisors is an integer number (5869886674212).

Almost surely, 2^{22501232251123} is an apocalyptic number.

22501232251123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22501232251123 is a deficient number, since it is larger than the sum of its proper divisors (978314445725).

22501232251123 is an equidigital number, since it uses as much as digits as its factorization.

22501232251123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978314445724.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 22501232251123 its reverse (32115223210522), we get a palindrome (54616455461645).

The spelling of 22501232251123 in words is "twenty-two trillion, five hundred one billion, two hundred thirty-two million, two hundred fifty-one thousand, one hundred twenty-three".