222020999 has 2 divisors, whose sum is σ = 222021000. Its totient is φ = 222020998.

The previous prime is 222020993. The next prime is 222021011. The reversal of 222020999 is 999020222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222020999 - 2⁴ = 222020983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222020993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111010499 + 111010500.

It is an arithmetic number, because the mean of its divisors is an integer number (111010500).

Almost surely, 2^222020999 is an apocalyptic number.

222020999 is a deficient number, since it is larger than the sum of its proper divisors (1).

222020999 is an equidigital number, since it uses as much as digits as its factorization.

222020999 is an evil number, because the sum of its binary digits is even.

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

The square root of 222020999 is about 14900.3690893884. The cubic root of 222020999 is about 605.5239856367.

The spelling of 222020999 in words is "two hundred twenty-two million, twenty thousand, nine hundred ninety-nine".