2120799888 has 40 divisors (see below), whose sum is σ = 6087482400. Its totient is φ = 706933152.

The previous prime is 2120799887. The next prime is 2120799943. The reversal of 2120799888 is 8889970212.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2120799883) 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, 2454198 + ... + 2455061.

It is an arithmetic number, because the mean of its divisors is an integer number (152187060).

Almost surely, 2^2120799888 is an apocalyptic number.

It is an amenable number.

2120799888 is an abundant number, since it is smaller than the sum of its proper divisors (3966682512).

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

2120799888 is a wasteful number, since it uses less digits than its factorization.

2120799888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4909276 (or 4909264 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 2120799888 is about 46052.1431423121. The cubic root of 2120799888 is about 1284.7932036621.

The spelling of 2120799888 in words is "two billion, one hundred twenty million, seven hundred ninety-nine thousand, eight hundred eighty-eight".