21022002002222 has 32 divisors (see below), whose sum is σ = 34418321247072. Its totient is φ = 9571758004224.

The previous prime is 21022002002213. The next prime is 21022002002263. The reversal of 21022002002222 is 22220020022012.

It is a self number, because there is not a number n which added to its sum of digits gives 21022002002222.

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 15 ways as a sum of consecutive naturals, for example, 12526028 + ... + 14104799.

It is an arithmetic number, because the mean of its divisors is an integer number (1075572538971).

Almost surely, 2^{21022002002222} is an apocalyptic number.

21022002002222 is a deficient number, since it is larger than the sum of its proper divisors (13396319244850).

21022002002222 is a wasteful number, since it uses less digits than its factorization.

21022002002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26631252.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 21022002002222 its reverse (22220020022012), we get a palindrome (43242022024234).

The spelling of 21022002002222 in words is "twenty-one trillion, twenty-two billion, two million, two thousand, two hundred twenty-two".