221144002 has 16 divisors (see below), whose sum is σ = 351014400. Its totient is φ = 104200560.

The previous prime is 221143991. The next prime is 221144003. The reversal of 221144002 is 200441122.

221144002 is digitally balanced in base 2, because in such base 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 (221144003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7977 + ... + 22492.

It is an arithmetic number, because the mean of its divisors is an integer number (21938400).

Almost surely, 2^221144002 is an apocalyptic number.

221144002 is a deficient number, since it is larger than the sum of its proper divisors (129870398).

221144002 is a wasteful number, since it uses less digits than its factorization.

221144002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30681.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 221144002 is about 14870.9112699928. The cubic root of 221144002 is about 604.7256475258.

Adding to 221144002 its reverse (200441122), we get a palindrome (421585124).

The spelling of 221144002 in words is "two hundred twenty-one million, one hundred forty-four thousand, two".