21000002002222 has 48 divisors (see below), whose sum is σ = 33035372149248. Its totient is φ = 10011102970880.

The previous prime is 21000002002219. The next prime is 21000002002261. The reversal of 21000002002222 is 22220020000012.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 697358238 + ... + 697388350.

It is an arithmetic number, because the mean of its divisors is an integer number (688236919776).

Almost surely, 2^{21000002002222} is an apocalyptic number.

21000002002222 is a deficient number, since it is larger than the sum of its proper divisors (12035370147026).

21000002002222 is a wasteful number, since it uses less digits than its factorization.

21000002002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32265 (or 32242 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 21000002002222 its reverse (22220020000012), we get a palindrome (43220022002234).

The spelling of 21000002002222 in words is "twenty-one trillion, two million, two thousand, two hundred twenty-two".