220221002 has 4 divisors (see below), whose sum is σ = 330331506. Its totient is φ = 110110500.

The previous prime is 220220999. The next prime is 220221007. The reversal of 220221002 is 200122022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 188760121 + 31460881 = 13739^2 + 5609^2 .

It is not an unprimeable number, because it can be changed into a prime (220221007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55055249 + ... + 55055252.

Almost surely, 2^220221002 is an apocalyptic number.

220221002 is a deficient number, since it is larger than the sum of its proper divisors (110110504).

220221002 is a wasteful number, since it uses less digits than its factorization.

220221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110110503.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 220221002 is about 14839.8450800539. The cubic root of 220221002 is about 603.8831495516.

Adding to 220221002 its reverse (200122022), we get a palindrome (420343024).

The spelling of 220221002 in words is "two hundred twenty million, two hundred twenty-one thousand, two".