12122200224 has 36 divisors (see below), whose sum is σ = 34472507706. Its totient is φ = 4040733312.

The previous prime is 12122200199. The next prime is 12122200271. The reversal of 12122200224 is 42200222121.

It can be written as a sum of positive squares in only one way, i.e., 9089715600 + 3032484624 = 95340^2 + 55068^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12122200197 and 12122200206.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21045199 + ... + 21045774.

Almost surely, 2^12122200224 is an apocalyptic number.

It is an amenable number.

12122200224 is an abundant number, since it is smaller than the sum of its proper divisors (22350307482).

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

12122200224 is a wasteful number, since it uses less digits than its factorization.

12122200224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42090989 (or 42090978 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12122200224 its reverse (42200222121), we get a palindrome (54322422345).

The spelling of 12122200224 in words is "twelve billion, one hundred twenty-two million, two hundred thousand, two hundred twenty-four".