21223132102 has 16 divisors (see below), whose sum is σ = 33472403712. Its totient is φ = 10072708360.

The previous prime is 21223132057. The next prime is 21223132109. The reversal of 21223132102 is 20123132212.

It is a self number, because there is not a number n which added to its sum of digits gives 21223132102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223132109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1754938 + ... + 1766989.

It is an arithmetic number, because the mean of its divisors is an integer number (2092025232).

Almost surely, 2^21223132102 is an apocalyptic number.

21223132102 is a deficient number, since it is larger than the sum of its proper divisors (12249271610).

21223132102 is a wasteful number, since it uses less digits than its factorization.

21223132102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3522083.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21223132102 its reverse (20123132212), we get a palindrome (41346264314).

The spelling of 21223132102 in words is "twenty-one billion, two hundred twenty-three million, one hundred thirty-two thousand, one hundred two".