2220020999 has 6 divisors (see below), whose sum is σ = 2582473464. Its totient is φ = 1902875100.

The previous prime is 2220020993. The next prime is 2220021029. The reversal of 2220020999 is 9990200222.

It is a de Polignac number, because none of the positive numbers 2^k-2220020999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220020993) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 22653227 + ... + 22653324.

It is an arithmetic number, because the mean of its divisors is an integer number (430412244).

Almost surely, 2^2220020999 is an apocalyptic number.

2220020999 is a deficient number, since it is larger than the sum of its proper divisors (362452465).

2220020999 is an equidigital number, since it uses as much as digits as its factorization.

2220020999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45306565 (or 45306558 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 2220020999 is about 47117.0987965091. The cubic root of 2220020999 is about 1304.5248631653.

The spelling of 2220020999 in words is "two billion, two hundred twenty million, twenty thousand, nine hundred ninety-nine".