2220220999 has 2 divisors, whose sum is σ = 2220221000. Its totient is φ = 2220220998.

The previous prime is 2220220991. The next prime is 2220221071. The reversal of 2220220999 is 9990220222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2220220999 - 2³ = 2220220991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220220991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110110499 + 1110110500.

It is an arithmetic number, because the mean of its divisors is an integer number (1110110500).

Almost surely, 2^2220220999 is an apocalyptic number.

2220220999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220220999 is an equidigital number, since it uses as much as digits as its factorization.

2220220999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 2220220999 is about 47119.2211204727. The cubic root of 2220220999 is about 1304.5640365392.

The spelling of 2220220999 in words is "two billion, two hundred twenty million, two hundred twenty thousand, nine hundred ninety-nine".