421120213 has 4 divisors (see below), whose sum is σ = 434704768. Its totient is φ = 407535660.

The previous prime is 421120201. The next prime is 421120247. The reversal of 421120213 is 312021124.

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 421120213 - 2⁵ = 421120181 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 (421120253) 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, 6792231 + ... + 6792292.

It is an arithmetic number, because the mean of its divisors is an integer number (108676192).

Almost surely, 2^421120213 is an apocalyptic number.

It is an amenable number.

421120213 is a deficient number, since it is larger than the sum of its proper divisors (13584555).

421120213 is a wasteful number, since it uses less digits than its factorization.

421120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13584554.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 421120213 is about 20521.2137311612. The cubic root of 421120213 is about 749.5524518021.

Adding to 421120213 its reverse (312021124), we get a palindrome (733141337).

The spelling of 421120213 in words is "four hundred twenty-one million, one hundred twenty thousand, two hundred thirteen".