220221120999 has 16 divisors (see below), whose sum is σ = 330654587904. Its totient is φ = 129161947200.

The previous prime is 220221120989. The next prime is 220221121031. The reversal of 220221120999 is 999021122022.

It is not a de Polignac number, because 220221120999 - 2⁴ = 220221120983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221120989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107633934 + ... + 107635979.

It is an arithmetic number, because the mean of its divisors is an integer number (20665911744).

Almost surely, 2^220221120999 is an apocalyptic number.

220221120999 is a deficient number, since it is larger than the sum of its proper divisors (110433466905).

220221120999 is a wasteful number, since it uses less digits than its factorization.

220221120999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215269958.

The product of its (nonzero) digits is 23328, while the sum is 39.

The spelling of 220221120999 in words is "two hundred twenty billion, two hundred twenty-one million, one hundred twenty thousand, nine hundred ninety-nine".