21313231102 has 8 divisors (see below), whose sum is σ = 32000268312. Its totient is φ = 10646475000.

The previous prime is 21313231099. The next prime is 21313231103. The reversal of 21313231102 is 20113231312.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21313231102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313231103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5067649 + ... + 5071852.

It is an arithmetic number, because the mean of its divisors is an integer number (4000033539).

Almost surely, 2^21313231102 is an apocalyptic number.

21313231102 is a deficient number, since it is larger than the sum of its proper divisors (10687037210).

21313231102 is a wasteful number, since it uses less digits than its factorization.

21313231102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10140554.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21313231102 its reverse (20113231312), we get a palindrome (41426462414).

The spelling of 21313231102 in words is "twenty-one billion, three hundred thirteen million, two hundred thirty-one thousand, one hundred two".