421120223 has 4 divisors (see below), whose sum is σ = 435641640. Its totient is φ = 406598808.

The previous prime is 421120201. The next prime is 421120247. The reversal of 421120223 is 322021124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421120223 - 2¹⁰ = 421119199 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, 7260665 + ... + 7260722.

It is an arithmetic number, because the mean of its divisors is an integer number (108910410).

Almost surely, 2^421120223 is an apocalyptic number.

421120223 is a deficient number, since it is larger than the sum of its proper divisors (14521417).

421120223 is a wasteful number, since it uses less digits than its factorization.

421120223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14521416.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 421120223 is about 20521.2139748115. The cubic root of 421120223 is about 749.5524577351.

Adding to 421120223 its reverse (322021124), we get a palindrome (743141347).

Subtracting from 421120223 its reverse (322021124), we obtain a palindrome (99099099).

The spelling of 421120223 in words is "four hundred twenty-one million, one hundred twenty thousand, two hundred twenty-three".