220021100993 has 8 divisors (see below), whose sum is σ = 239587406400. Its totient is φ = 201253420368.

The previous prime is 220021100983. The next prime is 220021101007. The reversal of 220021100993 is 399001120022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220021100993 - 2²² = 220016906689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220021100903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199655621 + ... + 199656722.

It is an arithmetic number, because the mean of its divisors is an integer number (29948425800).

Almost surely, 2^220021100993 is an apocalyptic number.

It is an amenable number.

220021100993 is a deficient number, since it is larger than the sum of its proper divisors (19566305407).

220021100993 is a wasteful number, since it uses less digits than its factorization.

220021100993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399312391.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 220021100993 in words is "two hundred twenty billion, twenty-one million, one hundred thousand, nine hundred ninety-three".