221795150 has 12 divisors (see below), whose sum is σ = 412539072. Its totient is φ = 88718040.

The previous prime is 221795143. The next prime is 221795177. The reversal of 221795150 is 51597122.

It is a happy number.

221795150 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2217902 + ... + 2218001.

It is an arithmetic number, because the mean of its divisors is an integer number (34378256).

Almost surely, 2^221795150 is an apocalyptic number.

221795150 is a deficient number, since it is larger than the sum of its proper divisors (190743922).

221795150 is a wasteful number, since it uses less digits than its factorization.

221795150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435915 (or 4435910 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 221795150 is about 14892.7885233089. The cubic root of 221795150 is about 605.3185945774.

The spelling of 221795150 in words is "two hundred twenty-one million, seven hundred ninety-five thousand, one hundred fifty".