220112011221 has 4 divisors (see below), whose sum is σ = 293482681632. Its totient is φ = 146741340812.

The previous prime is 220112011219. The next prime is 220112011241. The reversal of 220112011221 is 122110211022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220112011221 - 2¹ = 220112011219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220112011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220112011201) 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, 36685335201 + ... + 36685335206.

It is an arithmetic number, because the mean of its divisors is an integer number (73370670408).

Almost surely, 2^220112011221 is an apocalyptic number.

It is an amenable number.

220112011221 is a deficient number, since it is larger than the sum of its proper divisors (73370670411).

220112011221 is an equidigital number, since it uses as much as digits as its factorization.

220112011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73370670410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 220112011221 its reverse (122110211022), we get a palindrome (342222222243).

The spelling of 220112011221 in words is "two hundred twenty billion, one hundred twelve million, eleven thousand, two hundred twenty-one".