2212421323201 has 4 divisors (see below), whose sum is σ = 2213201171412. Its totient is φ = 2211641474992.

The previous prime is 2212421323181. The next prime is 2212421323271. The reversal of 2212421323201 is 1023231242122.

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 430933167025 + 1781488156176 = 656455^2 + 1334724^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212421323201 - 2⁵ = 2212421323169 is a prime.

It is a super-2 number, since 2×2212421323201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2212421323271) 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, 389919850 + ... + 389925523.

It is an arithmetic number, because the mean of its divisors is an integer number (553300292853).

Almost surely, 2^{2212421323201} is an apocalyptic number.

It is an amenable number.

2212421323201 is a deficient number, since it is larger than the sum of its proper divisors (779848211).

2212421323201 is an equidigital number, since it uses as much as digits as its factorization.

2212421323201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779848210.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 2212421323201 its reverse (1023231242122), we get a palindrome (3235652565323).

The spelling of 2212421323201 in words is "two trillion, two hundred twelve billion, four hundred twenty-one million, three hundred twenty-three thousand, two hundred one".