2220021992 has 16 divisors (see below), whose sum is σ = 4164261540. Its totient is φ = 1109552256.

The previous prime is 2220021929. The next prime is 2220022001. The reversal of 2220021992 is 2991200222.

It can be written as a sum of positive squares in 2 ways, for example, as 2215208356 + 4813636 = 47066^2 + 2194^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36323 + ... + 75890.

Almost surely, 2^2220021992 is an apocalyptic number.

It is an amenable number.

2220021992 is a deficient number, since it is larger than the sum of its proper divisors (1944239548).

2220021992 is a wasteful number, since it uses less digits than its factorization.

2220021992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114692 (or 114688 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2220021992 is about 47117.1093340837. The cubic root of 2220021992 is about 1304.5250576669.

The spelling of 2220021992 in words is "two billion, two hundred twenty million, twenty-one thousand, nine hundred ninety-two".