21323101102 has 8 divisors (see below), whose sum is σ = 31985920512. Its totient is φ = 10661127600.

The previous prime is 21323101099. The next prime is 21323101109. The reversal of 21323101102 is 20110132312.

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

It is a super-2 number, since 2×21323101102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323101109) 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, 144174 + ... + 251857.

It is an arithmetic number, because the mean of its divisors is an integer number (3998240064).

Almost surely, 2^21323101102 is an apocalyptic number.

21323101102 is a deficient number, since it is larger than the sum of its proper divisors (10662819410).

21323101102 is a wasteful number, since it uses less digits than its factorization.

21323101102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422954.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21323101102 its reverse (20110132312), we get a palindrome (41433233414).

The spelling of 21323101102 in words is "twenty-one billion, three hundred twenty-three million, one hundred one thousand, one hundred two".