21220211102 has 32 divisors (see below), whose sum is σ = 33740098560. Its totient is φ = 9989036640.

The previous prime is 21220211099. The next prime is 21220211141. The reversal of 21220211102 is 20111202212.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 1024424 + ... + 1044932.

It is an arithmetic number, because the mean of its divisors is an integer number (1054378080).

Almost surely, 2^21220211102 is an apocalyptic number.

21220211102 is a deficient number, since it is larger than the sum of its proper divisors (12519887458).

21220211102 is a wasteful number, since it uses less digits than its factorization.

21220211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20888.

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

Adding to 21220211102 its reverse (20111202212), we get a palindrome (41331413314).

The spelling of 21220211102 in words is "twenty-one billion, two hundred twenty million, two hundred eleven thousand, one hundred two".