112020221221 has 4 divisors (see below), whose sum is σ = 115882987500. Its totient is φ = 108157454944.

The previous prime is 112020221207. The next prime is 112020221233. The reversal of 112020221221 is 122122020211.

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 41603760900 + 70416460321 = 203970^2 + 265361^2 .

It is a cyclic number.

It is not a de Polignac number, because 112020221221 - 2³¹ = 109872737573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112020221195 and 112020221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112020221251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1931383096 + ... + 1931383153.

It is an arithmetic number, because the mean of its divisors is an integer number (28970746875).

Almost surely, 2^112020221221 is an apocalyptic number.

It is an amenable number.

112020221221 is a deficient number, since it is larger than the sum of its proper divisors (3862766279).

112020221221 is an equidigital number, since it uses as much as digits as its factorization.

112020221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3862766278.

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

Adding to 112020221221 its reverse (122122020211), we get a palindrome (234142241432).

The spelling of 112020221221 in words is "one hundred twelve billion, twenty million, two hundred twenty-one thousand, two hundred twenty-one".