221002222022002 has 4 divisors (see below), whose sum is σ = 331503333033006. Its totient is φ = 110501111011000.

The previous prime is 221002222021909. The next prime is 221002222022011. The reversal of 221002222022002 is 200220222200122.

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., 146850989367681 + 74151232654321 = 12118209^2 + 8611111^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55250555505499 + ... + 55250555505502.

Almost surely, 2^{221002222022002} is an apocalyptic number.

221002222022002 is a deficient number, since it is larger than the sum of its proper divisors (110501111011004).

221002222022002 is a wasteful number, since it uses less digits than its factorization.

221002222022002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110501111011003.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 221002222022002 its reverse (200220222200122), we get a palindrome (421222444222124).

The spelling of 221002222022002 in words is "two hundred twenty-one trillion, two billion, two hundred twenty-two million, twenty-two thousand, two".