421022223 has 12 divisors (see below), whose sum is σ = 624580008. Its totient is φ = 273095280.

The previous prime is 421022219. The next prime is 421022233. The reversal of 421022223 is 322220124.

421022223 is a `hidden beast` number, since 421 + 0 + 22 + 223 = 666.

It is not a de Polignac number, because 421022223 - 2² = 421022219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421022196 and 421022205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421022233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 631833 + ... + 632498.

It is an arithmetic number, because the mean of its divisors is an integer number (52048334).

Almost surely, 2^421022223 is an apocalyptic number.

421022223 is a deficient number, since it is larger than the sum of its proper divisors (203557785).

421022223 is a wasteful number, since it uses less digits than its factorization.

421022223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264374 (or 1264371 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 421022223 is about 20518.8260629111. The cubic root of 421022223 is about 749.4943097798.

Adding to 421022223 its reverse (322220124), we get a palindrome (743242347).

The spelling of 421022223 in words is "four hundred twenty-one million, twenty-two thousand, two hundred twenty-three".