112220212021 has 4 divisors (see below), whose sum is σ = 112421685132. Its totient is φ = 112018738912.

The previous prime is 112220212003. The next prime is 112220212033. The reversal of 112220212021 is 120212022211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11112111396 + 101108100625 = 105414^2 + 317975^2 .

It is a cyclic number.

It is not a de Polignac number, because 112220212021 - 2³¹ = 110072728373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112220211986 and 112220212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112220212081) 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, 100735720 + ... + 100736833.

It is an arithmetic number, because the mean of its divisors is an integer number (28105421283).

Almost surely, 2^112220212021 is an apocalyptic number.

It is an amenable number.

112220212021 is a deficient number, since it is larger than the sum of its proper divisors (201473111).

112220212021 is an equidigital number, since it uses as much as digits as its factorization.

112220212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201473110.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 112220212021 its reverse (120212022211), we get a palindrome (232432234232).

The spelling of 112220212021 in words is "one hundred twelve billion, two hundred twenty million, two hundred twelve thousand, twenty-one".