117221000 has 128 divisors (see below), whose sum is σ = 301916160. Its totient is φ = 42336000.

The previous prime is 117220997. The next prime is 117221011. The reversal of 117221000 is 122711.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 922937 + ... + 923063.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^117221000 is an apocalyptic number.

117221000 is a gapful number since it is divisible by the number (10) 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 117221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150958080).

117221000 is an abundant number, since it is smaller than the sum of its proper divisors (184695160).

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

117221000 is a wasteful number, since it uses less digits than its factorization.

117221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 117221000 is about 10826.8647354624. The cubic root of 117221000 is about 489.4050811269.

Adding to 117221000 its reverse (122711), we get a palindrome (117343711).

The spelling of 117221000 in words is "one hundred seventeen million, two hundred twenty-one thousand".