220420421311 has 4 divisors (see below), whose sum is σ = 220761102672. Its totient is φ = 220079739952.

The previous prime is 220420421293. The next prime is 220420421327. The reversal of 220420421311 is 113124024022.

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 220420421311 - 2⁵ = 220420421279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220420421911) 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, 170339710 + ... + 170341003.

It is an arithmetic number, because the mean of its divisors is an integer number (55190275668).

Almost surely, 2^220420421311 is an apocalyptic number.

220420421311 is a deficient number, since it is larger than the sum of its proper divisors (340681361).

220420421311 is an equidigital number, since it uses as much as digits as its factorization.

220420421311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340681360.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 220420421311 its reverse (113124024022), we get a palindrome (333544445333).

The spelling of 220420421311 in words is "two hundred twenty billion, four hundred twenty million, four hundred twenty-one thousand, three hundred eleven".