422214021 has 12 divisors (see below), whose sum is σ = 612038700. Its totient is φ = 280472640.

The previous prime is 422213983. The next prime is 422214031. The reversal of 422214021 is 120412224.

422214021 is a `hidden beast` number, since 42 + 221 + 402 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 261177921 + 161036100 = 16161^2 + 12690^2 .

It is not a de Polignac number, because 422214021 - 2⁹ = 422213509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 422213985 and 422214003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422214031) 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, 80946 + ... + 86003.

It is an arithmetic number, because the mean of its divisors is an integer number (51003225).

Almost surely, 2^422214021 is an apocalyptic number.

It is an amenable number.

422214021 is a deficient number, since it is larger than the sum of its proper divisors (189824679).

422214021 is a wasteful number, since it uses less digits than its factorization.

422214021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167236 (or 167233 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 422214021 is about 20547.8471135056. The cubic root of 422214021 is about 750.2008475422.

Adding to 422214021 its reverse (120412224), we get a palindrome (542626245).

The spelling of 422214021 in words is "four hundred twenty-two million, two hundred fourteen thousand, twenty-one".