220434631211 has 4 divisors (see below), whose sum is σ = 220435766832. Its totient is φ = 220433495592.

The previous prime is 220434631147. The next prime is 220434631217. The reversal of 220434631211 is 112136434022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 220434631211 - 2⁶ = 220434631147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220434631217) 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, 195095 + ... + 692048.

It is an arithmetic number, because the mean of its divisors is an integer number (55108941708).

Almost surely, 2^220434631211 is an apocalyptic number.

220434631211 is a deficient number, since it is larger than the sum of its proper divisors (1135621).

220434631211 is an equidigital number, since it uses as much as digits as its factorization.

220434631211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135620.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 220434631211 in words is "two hundred twenty billion, four hundred thirty-four million, six hundred thirty-one thousand, two hundred eleven".