22112122212001 has 4 divisors (see below), whose sum is σ = 22166186080900. Its totient is φ = 22058058343104.

The previous prime is 22112122211969. The next prime is 22112122212079. The reversal of 22112122212001 is 10021222121122.

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 8479301381776 + 13632820830225 = 2911924^2 + 3692265^2 .

It is a cyclic number.

It is not a de Polignac number, because 22112122212001 - 2⁵ = 22112122211969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22112122212001.

It is not an unprimeable number, because it can be changed into a prime (22112122212101) 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 3 ways as a sum of consecutive naturals, for example, 27031933836 + ... + 27031934653.

It is an arithmetic number, because the mean of its divisors is an integer number (5541546520225).

Almost surely, 2^{22112122212001} is an apocalyptic number.

It is an amenable number.

22112122212001 is a deficient number, since it is larger than the sum of its proper divisors (54063868899).

22112122212001 is an equidigital number, since it uses as much as digits as its factorization.

22112122212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54063868898.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22112122212001 its reverse (10021222121122), we get a palindrome (32133344333123).

The spelling of 22112122212001 in words is "twenty-two trillion, one hundred twelve billion, one hundred twenty-two million, two hundred twelve thousand, one".