15122122231 has 8 divisors (see below), whose sum is σ = 15166124064. Its totient is φ = 15078168960.

The previous prime is 15122122229. The next prime is 15122122243. The reversal of 15122122231 is 13222122151.

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

It is a cyclic number.

It is not a de Polignac number, because 15122122231 - 2¹ = 15122122229 is a prime.

It is a super-2 number, since 2×15122122231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15122122261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665646 + ... + 687988.

It is an arithmetic number, because the mean of its divisors is an integer number (1895765508).

Almost surely, 2^15122122231 is an apocalyptic number.

15122122231 is a deficient number, since it is larger than the sum of its proper divisors (44001833).

15122122231 is a wasteful number, since it uses less digits than its factorization.

15122122231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24281.

The product of its digits is 480, while the sum is 22.

Adding to 15122122231 its reverse (13222122151), we get a palindrome (28344244382).

The spelling of 15122122231 in words is "fifteen billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred thirty-one".