221196516 has 24 divisors (see below), whose sum is σ = 516591264. Its totient is φ = 73665600.

The previous prime is 221196509. The next prime is 221196529. The reversal of 221196516 is 615691122.

221196516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6591 + ... + 22041.

It is an arithmetic number, because the mean of its divisors is an integer number (21524636).

Almost surely, 2^221196516 is an apocalyptic number.

It is an amenable number.

221196516 is an abundant number, since it is smaller than the sum of its proper divisors (295394748).

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

221196516 is a wasteful number, since it uses less digits than its factorization.

221196516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16651 (or 16649 counting only the distinct ones).

The product of its digits is 6480, while the sum is 33.

The square root of 221196516 is about 14872.6768269871. The cubic root of 221196516 is about 604.7735108321.

The spelling of 221196516 in words is "two hundred twenty-one million, one hundred ninety-six thousand, five hundred sixteen".