2212100440421 has 4 divisors (see below), whose sum is σ = 2213213728992. Its totient is φ = 2210987151852.

The previous prime is 2212100440379. The next prime is 2212100440489. The reversal of 2212100440421 is 1240440012122.

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 cyclic number.

It is not a de Polignac number, because 2212100440421 - 2²² = 2212096246117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212100440721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556641305 + ... + 556645278.

It is an arithmetic number, because the mean of its divisors is an integer number (553303432248).

Almost surely, 2^{2212100440421} is an apocalyptic number.

It is an amenable number.

2212100440421 is a deficient number, since it is larger than the sum of its proper divisors (1113288571).

2212100440421 is a wasteful number, since it uses less digits than its factorization.

2212100440421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113288570.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 2212100440421 its reverse (1240440012122), we get a palindrome (3452540452543).

The spelling of 2212100440421 in words is "two trillion, two hundred twelve billion, one hundred million, four hundred forty thousand, four hundred twenty-one".