221210148 has 48 divisors (see below), whose sum is σ = 531177920. Its totient is φ = 71622144.

The previous prime is 221210131. The next prime is 221210167. The reversal of 221210148 is 841012122.

221210148 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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56808 + ... + 60576.

Almost surely, 2^221210148 is an apocalyptic number.

It is an amenable number.

221210148 is an abundant number, since it is smaller than the sum of its proper divisors (309967772).

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

221210148 is a wasteful number, since it uses less digits than its factorization.

221210148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3916 (or 3914 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 221210148 is about 14873.1351099894. The cubic root of 221210148 is about 604.7859343297.

The spelling of 221210148 in words is "two hundred twenty-one million, two hundred ten thousand, one hundred forty-eight".