21211232102 has 8 divisors (see below), whose sum is σ = 31902149136. Its totient is φ = 10577182392.

The previous prime is 21211232087. The next prime is 21211232143. The reversal of 21211232102 is 20123211212.

21211232102 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 14215898 + ... + 14217389.

It is an arithmetic number, because the mean of its divisors is an integer number (3987768642).

Almost surely, 2^21211232102 is an apocalyptic number.

21211232102 is a deficient number, since it is larger than the sum of its proper divisors (10690917034).

21211232102 is a wasteful number, since it uses less digits than its factorization.

21211232102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28433662.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21211232102 its reverse (20123211212), we get a palindrome (41334443314).

The spelling of 21211232102 in words is "twenty-one billion, two hundred eleven million, two hundred thirty-two thousand, one hundred two".