220112112220221 has 32 divisors (see below), whose sum is σ = 320548964440320. Its totient is φ = 133529551948800.

The previous prime is 220112112220201. The next prime is 220112112220279. The reversal of 220112112220221 is 122022211211022.

It is not a de Polignac number, because 220112112220221 - 2¹⁸ = 220112111958077 is a prime.

It is a super-4 number, since 4×220112112220221⁴ (a number of 58 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220112112220201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17929285 + ... + 27598613.

It is an arithmetic number, because the mean of its divisors is an integer number (10017155138760).

Almost surely, 2^{220112112220221} is an apocalyptic number.

It is an amenable number.

220112112220221 is a deficient number, since it is larger than the sum of its proper divisors (100436852220099).

220112112220221 is a wasteful number, since it uses less digits than its factorization.

220112112220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9677637.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 220112112220221 its reverse (122022211211022), we get a palindrome (342134323431243).

The spelling of 220112112220221 in words is "two hundred twenty trillion, one hundred twelve billion, one hundred twelve million, two hundred twenty thousand, two hundred twenty-one".