220112112121 has 8 divisors (see below), whose sum is σ = 240325639488. Its totient is φ = 199932474000.

The previous prime is 220112112109. The next prime is 220112112131. The reversal of 220112112121 is 121211211022.

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

It is a cyclic number.

It is not a de Polignac number, because 220112112121 - 2⁷ = 220112111993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220112112095 and 220112112104.

It is not an unprimeable number, because it can be changed into a prime (220112112131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8458725 + ... + 8484706.

It is an arithmetic number, because the mean of its divisors is an integer number (30040704936).

Almost surely, 2^220112112121 is an apocalyptic number.

It is an amenable number.

220112112121 is a deficient number, since it is larger than the sum of its proper divisors (20213527367).

220112112121 is a wasteful number, since it uses less digits than its factorization.

220112112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16944623.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 220112112121 its reverse (121211211022), we get a palindrome (341323323143).

It can be divided in two parts, 220112 and 112121, that added together give a palindrome (332233).

The spelling of 220112112121 in words is "two hundred twenty billion, one hundred twelve million, one hundred twelve thousand, one hundred twenty-one".