422216212 has 24 divisors (see below), whose sum is σ = 807905952. Its totient is φ = 191474400.

The previous prime is 422216203. The next prime is 422216219. The reversal of 422216212 is 212612224.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422216219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8662 + ... + 30322.

It is an arithmetic number, because the mean of its divisors is an integer number (33662748).

Almost surely, 2^422216212 is an apocalyptic number.

It is an amenable number.

422216212 is a deficient number, since it is larger than the sum of its proper divisors (385689740).

422216212 is a wasteful number, since it uses less digits than its factorization.

422216212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22119 (or 22117 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 422216212 is about 20547.9004280243. The cubic root of 422216212 is about 750.2021452152.

Adding to 422216212 its reverse (212612224), we get a palindrome (634828436).

The spelling of 422216212 in words is "four hundred twenty-two million, two hundred sixteen thousand, two hundred twelve".