222221100221002 has 16 divisors (see below), whose sum is σ = 342602801425800. Its totient is φ = 108061098647040.

The previous prime is 222221100220993. The next prime is 222221100221023. The reversal of 222221100221002 is 200122001122222.

It can be written as a sum of positive squares in 4 ways, for example, as 165507684670441 + 56713415550561 = 12864979^2 + 7530831^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10233047727 + ... + 10233069442.

Almost surely, 2^{222221100221002} is an apocalyptic number.

222221100221002 is a deficient number, since it is larger than the sum of its proper divisors (120381701204798).

222221100221002 is a wasteful number, since it uses less digits than its factorization.

222221100221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20466117321.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222221100221002 its reverse (200122001122222), we get a palindrome (422343101343224).

The spelling of 222221100221002 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred million, two hundred twenty-one thousand, two".