220021000999 has 2 divisors, whose sum is σ = 220021001000. Its totient is φ = 220021000998.

The previous prime is 220021000987. The next prime is 220021001027. The reversal of 220021000999 is 999000120022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220021000999 - 2⁵ = 220021000967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220021000099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010500499 + 110010500500.

It is an arithmetic number, because the mean of its divisors is an integer number (110010500500).

Almost surely, 2^220021000999 is an apocalyptic number.

220021000999 is a deficient number, since it is larger than the sum of its proper divisors (1).

220021000999 is an equidigital number, since it uses as much as digits as its factorization.

220021000999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 220021000999 in words is "two hundred twenty billion, twenty-one million, nine hundred ninety-nine", and thus it is an aban number.