21213211102 has 16 divisors (see below), whose sum is σ = 33022922400. Its totient is φ = 10207923040.

The previous prime is 21213211087. The next prime is 21213211111. The reversal of 21213211102 is 20111231212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569977 + ... + 606052.

It is an arithmetic number, because the mean of its divisors is an integer number (2063932650).

Almost surely, 2^21213211102 is an apocalyptic number.

21213211102 is a deficient number, since it is larger than the sum of its proper divisors (11809711298).

21213211102 is a wasteful number, since it uses less digits than its factorization.

21213211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176371.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21213211102 its reverse (20111231212), we get a palindrome (41324442314).

The spelling of 21213211102 in words is "twenty-one billion, two hundred thirteen million, two hundred eleven thousand, one hundred two".