222199908 has 72 divisors (see below), whose sum is σ = 634888800. Its totient is φ = 60141312.

The previous prime is 222199897. The next prime is 222199919. The reversal of 222199908 is 809991222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (222199897) and next prime (222199919).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 222199908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1228 + ... + 21116.

It is an arithmetic number, because the mean of its divisors is an integer number (8817900).

Almost surely, 2^222199908 is an apocalyptic number.

222199908 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222199908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317444400).

222199908 is an abundant number, since it is smaller than the sum of its proper divisors (412688892).

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

222199908 is a wasteful number, since it uses less digits than its factorization.

222199908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19929 (or 19920 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 222199908 is about 14906.3713894428. The cubic root of 222199908 is about 605.6865897824.

The spelling of 222199908 in words is "two hundred twenty-two million, one hundred ninety-nine thousand, nine hundred eight".