109221400 has 48 divisors (see below), whose sum is σ = 256501440. Its totient is φ = 43248000.

The previous prime is 109221391. The next prime is 109221421. The reversal of 109221400 is 4122901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17497 + ... + 22903.

It is an arithmetic number, because the mean of its divisors is an integer number (5343780).

Almost surely, 2^109221400 is an apocalyptic number.

109221400 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 109221400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128250720).

109221400 is an abundant number, since it is smaller than the sum of its proper divisors (147280040).

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

109221400 is a wasteful number, since it uses less digits than its factorization.

109221400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5524 (or 5515 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 109221400 is about 10450.9042670957. The cubic root of 109221400 is about 478.0088232121.

The spelling of 109221400 in words is "one hundred nine million, two hundred twenty-one thousand, four hundred".