122213212 has 12 divisors (see below), whose sum is σ = 233316216. Its totient is φ = 55551440.

The previous prime is 122213173. The next prime is 122213213. The reversal of 122213212 is 212312221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122213213) 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, 1388743 + ... + 1388830.

It is an arithmetic number, because the mean of its divisors is an integer number (19443018).

Almost surely, 2^122213212 is an apocalyptic number.

It is an amenable number.

122213212 is a deficient number, since it is larger than the sum of its proper divisors (111103004).

122213212 is a wasteful number, since it uses less digits than its factorization.

122213212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777588 (or 2777586 counting only the distinct ones).

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

The square root of 122213212 is about 11055.0084577082. The cubic root of 122213212 is about 496.2563223799.

Adding to 122213212 its reverse (212312221), we get a palindrome (334525433).

Subtracting 122213212 from its reverse (212312221), we obtain a palindrome (90099009).

The spelling of 122213212 in words is "one hundred twenty-two million, two hundred thirteen thousand, two hundred twelve".