221313002 has 16 divisors (see below), whose sum is σ = 345266592. Its totient is φ = 106308720.

The previous prime is 221312977. The next prime is 221313011. The reversal of 221313002 is 200313122.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15848 + ... + 26339.

It is an arithmetic number, because the mean of its divisors is an integer number (21579162).

Almost surely, 2^221313002 is an apocalyptic number.

221313002 is a deficient number, since it is larger than the sum of its proper divisors (123953590).

221313002 is a wasteful number, since it uses less digits than its factorization.

221313002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42293.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 221313002 is about 14876.5924189648. The cubic root of 221313002 is about 604.8796536800.

Adding to 221313002 its reverse (200313122), we get a palindrome (421626124).

The spelling of 221313002 in words is "two hundred twenty-one million, three hundred thirteen thousand, two".