112211212221201 has 4 divisors (see below), whose sum is σ = 149614949628272. Its totient is φ = 74807474814132.

The previous prime is 112211212221127. The next prime is 112211212221271. The reversal of 112211212221201 is 102122212112211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-112211212221201 is a prime.

It is a super-2 number, since 2×112211212221201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112211212221271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18701868703531 + ... + 18701868703536.

It is an arithmetic number, because the mean of its divisors is an integer number (37403737407068).

Almost surely, 2^{112211212221201} is an apocalyptic number.

It is an amenable number.

112211212221201 is a deficient number, since it is larger than the sum of its proper divisors (37403737407071).

112211212221201 is an equidigital number, since it uses as much as digits as its factorization.

112211212221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37403737407070.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 112211212221201 its reverse (102122212112211), we get a palindrome (214333424333412).

The spelling of 112211212221201 in words is "one hundred twelve trillion, two hundred eleven billion, two hundred twelve million, two hundred twenty-one thousand, two hundred one".