221119380 has 36 divisors (see below), whose sum is σ = 670729332. Its totient is φ = 58965120.

The previous prime is 221119369. The next prime is 221119399. The reversal of 221119380 is 83911122.

It can be written as a sum of positive squares in 2 ways, for example, as 147914244 + 73205136 = 12162^2 + 8556^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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, 614041 + ... + 614400.

Almost surely, 2^221119380 is an apocalyptic number.

221119380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221119380 is an abundant number, since it is smaller than the sum of its proper divisors (449609952).

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

221119380 is a wasteful number, since it uses less digits than its factorization.

221119380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228456 (or 1228451 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 221119380 is about 14870.0833891408. The cubic root of 221119380 is about 604.7032034662.

The spelling of 221119380 in words is "two hundred twenty-one million, one hundred nineteen thousand, three hundred eighty".