112211221021 has 8 divisors (see below), whose sum is σ = 116819944920. Its totient is φ = 107651788608.

The previous prime is 112211221013. The next prime is 112211221081. The reversal of 112211221021 is 120122112211.

It can be written as a sum of positive squares in 4 ways, for example, as 18826584100 + 93384636921 = 137210^2 + 305589^2 .

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 112211221021 - 2³ = 112211221013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112211220986 and 112211221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112211221081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12318226 + ... + 12327331.

It is an arithmetic number, because the mean of its divisors is an integer number (14602493115).

Almost surely, 2^112211221021 is an apocalyptic number.

It is an amenable number.

112211221021 is a deficient number, since it is larger than the sum of its proper divisors (4608723899).

112211221021 is a wasteful number, since it uses less digits than its factorization.

112211221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24645743.

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

Adding to 112211221021 its reverse (120122112211), we get a palindrome (232333333232).

The spelling of 112211221021 in words is "one hundred twelve billion, two hundred eleven million, two hundred twenty-one thousand, twenty-one".