220521023411 has 4 divisors (see below), whose sum is σ = 237484179072. Its totient is φ = 203557867752.

The previous prime is 220521023389. The next prime is 220521023413. The reversal of 220521023411 is 114320125022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220521023411 - 2²² = 220516829107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220521023413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8481577811 + ... + 8481577836.

It is an arithmetic number, because the mean of its divisors is an integer number (59371044768).

Almost surely, 2^220521023411 is an apocalyptic number.

220521023411 is a deficient number, since it is larger than the sum of its proper divisors (16963155661).

220521023411 is a wasteful number, since it uses less digits than its factorization.

220521023411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16963155660.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 220521023411 its reverse (114320125022), we get a palindrome (334841148433).

The spelling of 220521023411 in words is "two hundred twenty billion, five hundred twenty-one million, twenty-three thousand, four hundred eleven".