112220211221021 has 4 divisors (see below), whose sum is σ = 112368454565532. Its totient is φ = 112071967876512.

The previous prime is 112220211221017. The next prime is 112220211221059. The reversal of 112220211221021 is 120122112022211.

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 58021903418521 + 54198307802500 = 7617211^2 + 7361950^2 .

It is a cyclic number.

It is not a de Polignac number, because 112220211221021 - 2² = 112220211221017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112220211220984 and 112220211221002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112220211221081) 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, 74121671120 + ... + 74121672633.

It is an arithmetic number, because the mean of its divisors is an integer number (28092113641383).

Almost surely, 2^{112220211221021} is an apocalyptic number.

It is an amenable number.

112220211221021 is a deficient number, since it is larger than the sum of its proper divisors (148243344511).

112220211221021 is an equidigital number, since it uses as much as digits as its factorization.

112220211221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148243344510.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 112220211221021 its reverse (120122112022211), we get a palindrome (232342323243232).

The spelling of 112220211221021 in words is "one hundred twelve trillion, two hundred twenty billion, two hundred eleven million, two hundred twenty-one thousand, twenty-one".