112221110021 has 8 divisors (see below), whose sum is σ = 116096917080. Its totient is φ = 108345710592.

The previous prime is 112221110011. The next prime is 112221110033. The reversal of 112221110021 is 120011122211.

It can be written as a sum of positive squares in 4 ways, for example, as 4236577921 + 107984532100 = 65089^2 + 328610^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112221110021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 112221109978 and 112221110005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112221110011) 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, 523301 + ... + 705893.

It is an arithmetic number, because the mean of its divisors is an integer number (14512114635).

Almost surely, 2^112221110021 is an apocalyptic number.

It is an amenable number.

112221110021 is a deficient number, since it is larger than the sum of its proper divisors (3875807059).

112221110021 is a wasteful number, since it uses less digits than its factorization.

112221110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203815.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 112221110021 its reverse (120011122211), we get a palindrome (232232232232).

The spelling of 112221110021 in words is "one hundred twelve billion, two hundred twenty-one million, one hundred ten thousand, twenty-one".