12155053224 has 64 divisors (see below), whose sum is σ = 31232370240. Its totient is φ = 3939217920.

The previous prime is 12155053201. The next prime is 12155053237. The reversal of 12155053224 is 42235055121.

It is a junction number, because it is equal to n+sod(n) for n = 12155053191 and 12155053200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1390692 + ... + 1399404.

It is an arithmetic number, because the mean of its divisors is an integer number (488005785).

Almost surely, 2^12155053224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12155053224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15616185120).

12155053224 is an abundant number, since it is smaller than the sum of its proper divisors (19077317016).

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

12155053224 is a wasteful number, since it uses less digits than its factorization.

12155053224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10330 (or 10326 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 12155053224 in words is "twelve billion, one hundred fifty-five million, fifty-three thousand, two hundred twenty-four".