2122125456 has 40 divisors (see below), whose sum is σ = 5980536864. Its totient is φ = 643068160.

The previous prime is 2122125451. The next prime is 2122125463. The reversal of 2122125456 is 6545212212.

It is not an unprimeable number, because it can be changed into a prime (2122125451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2009061 + ... + 2010116.

Almost surely, 2^2122125456 is an apocalyptic number.

It is an amenable number.

2122125456 is an abundant number, since it is smaller than the sum of its proper divisors (3858411408).

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

2122125456 is a wasteful number, since it uses less digits than its factorization.

2122125456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4019199 (or 4019193 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 2122125456 is about 46066.5329279294. The cubic root of 2122125456 is about 1285.0608269086.

Adding to 2122125456 its reverse (6545212212), we get a palindrome (8667337668).

The spelling of 2122125456 in words is "two billion, one hundred twenty-two million, one hundred twenty-five thousand, four hundred fifty-six".