2112619900842 has 72 divisors (see below), whose sum is σ = 5204787571620. Its totient is φ = 618112387200.

The previous prime is 2112619900789. The next prime is 2112619900901. The reversal of 2112619900842 is 2480099162112.

It is a happy number.

2112619900842 is a `hidden beast` number, since 21 + 1 + 2 + 619 + 9 + 0 + 0 + 8 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1994221284561 + 118398616281 = 1412169^2 + 344091^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16660659 + ... + 16786982.

Almost surely, 2^{2112619900842} is an apocalyptic number.

2112619900842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2112619900842 is an abundant number, since it is smaller than the sum of its proper divisors (3092167670778).

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

2112619900842 is a wasteful number, since it uses less digits than its factorization.

2112619900842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33447700 (or 33447686 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 2112619900842 in words is "two trillion, one hundred twelve billion, six hundred nineteen million, nine hundred thousand, eight hundred forty-two".