21002211100022 has 32 divisors (see below), whose sum is σ = 32748969876480. Its totient is φ = 10094495785920.

The previous prime is 21002211099997. The next prime is 21002211100051. The reversal of 21002211100022 is 22000111220012.

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, 2856983 + ... + 7082850.

It is an arithmetic number, because the mean of its divisors is an integer number (1023405308640).

Almost surely, 2^{21002211100022} is an apocalyptic number.

21002211100022 is a deficient number, since it is larger than the sum of its proper divisors (11746758776458).

21002211100022 is a wasteful number, since it uses less digits than its factorization.

21002211100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9940268.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21002211100022 its reverse (22000111220012), we get a palindrome (43002322320034).

The spelling of 21002211100022 in words is "twenty-one trillion, two billion, two hundred eleven million, one hundred thousand, twenty-two".