12124155222 has 64 divisors (see below), whose sum is σ = 27901713600. Its totient is φ = 3897815040.

The previous prime is 12124155119. The next prime is 12124155259. The reversal of 12124155222 is 22255142121.

12124155222 is a `hidden beast` number, since 1 + 2 + 124 + 15 + 522 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1657878 + ... + 1665174.

It is an arithmetic number, because the mean of its divisors is an integer number (435964275).

Almost surely, 2^12124155222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12124155222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13950856800).

12124155222 is an abundant number, since it is smaller than the sum of its proper divisors (15777558378).

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

12124155222 is a wasteful number, since it uses less digits than its factorization.

12124155222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8398 (or 8392 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

Adding to 12124155222 its reverse (22255142121), we get a palindrome (34379297343).

The spelling of 12124155222 in words is "twelve billion, one hundred twenty-four million, one hundred fifty-five thousand, two hundred twenty-two".