221496996 has 48 divisors (see below), whose sum is σ = 598993920. Its totient is φ = 62391840.

The previous prime is 221496991. The next prime is 221497007. The reversal of 221496996 is 699694122.

221496996 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221496991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12606 + ... + 24533.

It is an arithmetic number, because the mean of its divisors is an integer number (12479040).

Almost surely, 2^221496996 is an apocalyptic number.

It is an amenable number.

221496996 is an abundant number, since it is smaller than the sum of its proper divisors (377496924).

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

221496996 is a wasteful number, since it uses less digits than its factorization.

221496996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37224 (or 37222 counting only the distinct ones).

The product of its digits is 419904, while the sum is 48.

The square root of 221496996 is about 14882.7751444413. The cubic root of 221496996 is about 605.0472344334.

The spelling of 221496996 in words is "two hundred twenty-one million, four hundred ninety-six thousand, nine hundred ninety-six".