15523231242222 has 48 divisors (see below), whose sum is σ = 36697230206208. Its totient is φ = 4703245831440.

The previous prime is 15523231242199. The next prime is 15523231242229. The reversal of 15523231242222 is 22224213232551.

15523231242222 is a `hidden beast` number, since 1 + 5 + 52 + 32 + 312 + 42 + 222 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15523231242229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5140278 + ... + 7580825.

It is an arithmetic number, because the mean of its divisors is an integer number (764525629296).

Almost surely, 2^{15523231242222} is an apocalyptic number.

15523231242222 is an abundant number, since it is smaller than the sum of its proper divisors (21173998963986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15523231242222 is a wasteful number, since it uses less digits than its factorization.

15523231242222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12727285 (or 12727282 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

Adding to 15523231242222 its reverse (22224213232551), we get a palindrome (37747444474773).

The spelling of 15523231242222 in words is "fifteen trillion, five hundred twenty-three billion, two hundred thirty-one million, two hundred forty-two thousand, two hundred twenty-two".