220112121 has 8 divisors (see below), whose sum is σ = 302950144. Its totient is φ = 142007760.

The previous prime is 220112119. The next prime is 220112129. The reversal of 220112121 is 121211022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220112121 - 2¹ = 220112119 is a prime.

It is a super-2 number, since 2×220112121² = 96898691622237282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220112097 and 220112106.

It is not an unprimeable number, because it can be changed into a prime (220112129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1183306 + ... + 1183491.

It is an arithmetic number, because the mean of its divisors is an integer number (37868768).

Almost surely, 2^220112121 is an apocalyptic number.

It is an amenable number.

220112121 is a deficient number, since it is larger than the sum of its proper divisors (82838023).

220112121 is a wasteful number, since it uses less digits than its factorization.

220112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366831.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 220112121 is about 14836.1760908935. The cubic root of 220112121 is about 603.7836097866.

Adding to 220112121 its reverse (121211022), we get a palindrome (341323143).

The spelling of 220112121 in words is "two hundred twenty million, one hundred twelve thousand, one hundred twenty-one".