2120799886 has 4 divisors (see below), whose sum is σ = 3181199832. Its totient is φ = 1060399942.

The previous prime is 2120799883. The next prime is 2120799887. The reversal of 2120799886 is 6889970212.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2120799886² = 8995584312915225992, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 530199970 + ... + 530199973.

It is an arithmetic number, because the mean of its divisors is an integer number (795299958).

Almost surely, 2^2120799886 is an apocalyptic number.

2120799886 is a deficient number, since it is larger than the sum of its proper divisors (1060399946).

2120799886 is a wasteful number, since it uses less digits than its factorization.

2120799886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060399945.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 2120799886 is about 46052.1431205975. The cubic root of 2120799886 is about 1284.7932032582.

The spelling of 2120799886 in words is "two billion, one hundred twenty million, seven hundred ninety-nine thousand, eight hundred eighty-six".