221076716 has 12 divisors (see below), whose sum is σ = 442153488. Its totient is φ = 94747152.

The previous prime is 221076701. The next prime is 221076731. The reversal of 221076716 is 617670122.

It is an interprime number because it is at equal distance from previous prime (221076701) and next prime (221076731).

221076716 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3947771 + ... + 3947826.

It is an arithmetic number, because the mean of its divisors is an integer number (36846124).

Almost surely, 2^221076716 is an apocalyptic number.

It is an amenable number.

221076716 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221076716 is a wasteful number, since it uses less digits than its factorization.

221076716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7895608 (or 7895606 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 221076716 is about 14868.6487617403. The cubic root of 221076716 is about 604.6643093675.

The spelling of 221076716 in words is "two hundred twenty-one million, seventy-six thousand, seven hundred sixteen".