220112120021 has 16 divisors (see below), whose sum is σ = 224215992000. Its totient is φ = 216049392000.

The previous prime is 220112120017. The next prime is 220112120023. The reversal of 220112120021 is 120021211022.

It is not a de Polignac number, because 220112120021 - 2² = 220112120017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220112119978 and 220112120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220112120023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13871390 + ... + 13887248.

It is an arithmetic number, because the mean of its divisors is an integer number (14013499500).

Almost surely, 2^220112120021 is an apocalyptic number.

It is an amenable number.

220112120021 is a deficient number, since it is larger than the sum of its proper divisors (4103871979).

220112120021 is a wasteful number, since it uses less digits than its factorization.

220112120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17140.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220112120021 its reverse (120021211022), we get a palindrome (340133331043).

The spelling of 220112120021 in words is "two hundred twenty billion, one hundred twelve million, one hundred twenty thousand, twenty-one".