12012922225 has 12 divisors (see below), whose sum is σ = 14912086860. Its totient is φ = 9599974400.

The previous prime is 12012922219. The next prime is 12012922237. The reversal of 12012922225 is 52222921021.

It can be written as a sum of positive squares in 6 ways, for example, as 4617610209 + 7395312016 = 67953^2 + 85996^2 .

It is not a de Polignac number, because 12012922225 - 2³ = 12012922217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12012922193 and 12012922202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 235396 + ... + 281845.

It is an arithmetic number, because the mean of its divisors is an integer number (1242673905).

Almost surely, 2^12012922225 is an apocalyptic number.

It is an amenable number.

12012922225 is a deficient number, since it is larger than the sum of its proper divisors (2899164635).

12012922225 is an equidigital number, since it uses as much as digits as its factorization.

12012922225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518180 (or 518175 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 12012922225 in words is "twelve billion, twelve million, nine hundred twenty-two thousand, two hundred twenty-five".