220031310021 has 8 divisors (see below), whose sum is σ = 293377310304. Its totient is φ = 146686424880.

The previous prime is 220031310019. The next prime is 220031310053. The reversal of 220031310021 is 120013130022.

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

It is not a de Polignac number, because 220031310021 - 2¹ = 220031310019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220031310011) 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, 465411 + ... + 810351.

It is an arithmetic number, because the mean of its divisors is an integer number (36672163788).

Almost surely, 2^220031310021 is an apocalyptic number.

It is an amenable number.

220031310021 is a deficient number, since it is larger than the sum of its proper divisors (73346000283).

220031310021 is a wasteful number, since it uses less digits than its factorization.

220031310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557571.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 220031310021 its reverse (120013130022), we get a palindrome (340044440043).

The spelling of 220031310021 in words is "two hundred twenty billion, thirty-one million, three hundred ten thousand, twenty-one".