22151215123 has 8 divisors (see below), whose sum is σ = 22382032608. Its totient is φ = 21920700864.

The previous prime is 22151215109. The next prime is 22151215127. The reversal of 22151215123 is 32151215122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22151215123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22151215127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72561 + ... + 222637.

It is an arithmetic number, because the mean of its divisors is an integer number (2797754076).

Almost surely, 2^22151215123 is an apocalyptic number.

22151215123 is a deficient number, since it is larger than the sum of its proper divisors (230817485).

22151215123 is a wasteful number, since it uses less digits than its factorization.

22151215123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151613.

The product of its digits is 1200, while the sum is 25.

Subtracting 22151215123 from its reverse (32151215122), we obtain a palindrome (9999999999).

The spelling of 22151215123 in words is "twenty-two billion, one hundred fifty-one million, two hundred fifteen thousand, one hundred twenty-three".