2213042421 has 4 divisors (see below), whose sum is σ = 2950723232. Its totient is φ = 1475361612.

The previous prime is 2213042389. The next prime is 2213042431. The reversal of 2213042421 is 1242403122.

2213042421 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 2213042421 - 2⁵ = 2213042389 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 (2213042431) 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, 368840401 + ... + 368840406.

It is an arithmetic number, because the mean of its divisors is an integer number (737680808).

Almost surely, 2^2213042421 is an apocalyptic number.

It is an amenable number.

2213042421 is a deficient number, since it is larger than the sum of its proper divisors (737680811).

2213042421 is an equidigital number, since it uses as much as digits as its factorization.

2213042421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737680810.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2213042421 is about 47042.9848223941. The cubic root of 2213042421 is about 1303.1565151002.

Adding to 2213042421 its reverse (1242403122), we get a palindrome (3455445543).

The spelling of 2213042421 in words is "two billion, two hundred thirteen million, forty-two thousand, four hundred twenty-one".