212222268 has 60 divisors (see below), whose sum is σ = 557068512. Its totient is φ = 70450560.

The previous prime is 212222189. The next prime is 212222291. The reversal of 212222268 is 862222212.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 86596 + ... + 89012.

Almost surely, 2^212222268 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212222268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278534256).

212222268 is an abundant number, since it is smaller than the sum of its proper divisors (344846244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212222268 is a wasteful number, since it uses less digits than its factorization.

212222268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704 (or 2693 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 212222268 is about 14567.8504934668. The cubic root of 212222268 is about 596.4815073474.

The spelling of 212222268 in words is "two hundred twelve million, two hundred twenty-two thousand, two hundred sixty-eight".