220220402 has 4 divisors (see below), whose sum is σ = 330330606. Its totient is φ = 110110200.

The previous prime is 220220383. The next prime is 220220419. The reversal of 220220402 is 204022022.

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., 171374281 + 48846121 = 13091^2 + 6989^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55055099 + ... + 55055102.

Almost surely, 2^220220402 is an apocalyptic number.

220220402 is a deficient number, since it is larger than the sum of its proper divisors (110110204).

220220402 is a wasteful number, since it uses less digits than its factorization.

220220402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110110203.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 220220402 is about 14839.8248641957. The cubic root of 220220402 is about 603.8826011174.

Adding to 220220402 its reverse (204022022), we get a palindrome (424242424).

The spelling of 220220402 in words is "two hundred twenty million, two hundred twenty thousand, four hundred two".