221151004 has 12 divisors (see below), whose sum is σ = 387298800. Its totient is φ = 110494208.

The previous prime is 221151001. The next prime is 221151019. The reversal of 221151004 is 400151122.

221151004 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221151001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13984 + ... + 25255.

It is an arithmetic number, because the mean of its divisors is an integer number (32274900).

Almost surely, 2^221151004 is an apocalyptic number.

It is an amenable number.

221151004 is a deficient number, since it is larger than the sum of its proper divisors (166147796).

221151004 is a wasteful number, since it uses less digits than its factorization.

221151004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40652 (or 40650 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 221151004 is about 14871.1466941860. The cubic root of 221151004 is about 604.7320298593.

The spelling of 221151004 in words is "two hundred twenty-one million, one hundred fifty-one thousand, four".