2212213421 has 4 divisors (see below), whose sum is σ = 2413323744. Its totient is φ = 2011103100.

The previous prime is 2212213369. The next prime is 2212213427. The reversal of 2212213421 is 1243122122.

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 a de Polignac number, because none of the positive numbers 2^k-2212213421 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 = 2212213393 and 2212213402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212213427) 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, 100555145 + ... + 100555166.

It is an arithmetic number, because the mean of its divisors is an integer number (603330936).

Almost surely, 2^2212213421 is an apocalyptic number.

It is an amenable number.

2212213421 is a deficient number, since it is larger than the sum of its proper divisors (201110323).

2212213421 is a wasteful number, since it uses less digits than its factorization.

2212213421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201110322.

The product of its digits is 384, while the sum is 20.

The square root of 2212213421 is about 47034.1729065155. The cubic root of 2212213421 is about 1302.9937750847.

Adding to 2212213421 its reverse (1243122122), we get a palindrome (3455335543).

The spelling of 2212213421 in words is "two billion, two hundred twelve million, two hundred thirteen thousand, four hundred twenty-one".