21211102200212 has 12 divisors (see below), whose sum is σ = 37130612793120. Its totient is φ = 10602355687896.

The previous prime is 21211102200203. The next prime is 21211102200241. The reversal of 21211102200212 is 21200220111212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798838118 + ... + 798864669.

It is an arithmetic number, because the mean of its divisors is an integer number (3094217732760).

Almost surely, 2^{21211102200212} is an apocalyptic number.

It is an amenable number.

21211102200212 is a deficient number, since it is larger than the sum of its proper divisors (15919510592908).

21211102200212 is a wasteful number, since it uses less digits than its factorization.

21211102200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597706110 (or 1597706108 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21211102200212 its reverse (21200220111212), we get a palindrome (42411322311424).

The spelling of 21211102200212 in words is "twenty-one trillion, two hundred eleven billion, one hundred two million, two hundred thousand, two hundred twelve".