21340331102 has 4 divisors (see below), whose sum is σ = 32010496656. Its totient is φ = 10670165550.

The previous prime is 21340331069. The next prime is 21340331113. The reversal of 21340331102 is 20113304312.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5335082774 + ... + 5335082777.

It is an arithmetic number, because the mean of its divisors is an integer number (8002624164).

Almost surely, 2^21340331102 is an apocalyptic number.

21340331102 is a deficient number, since it is larger than the sum of its proper divisors (10670165554).

21340331102 is a wasteful number, since it uses less digits than its factorization.

21340331102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10670165553.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21340331102 its reverse (20113304312), we get a palindrome (41453635414).

The spelling of 21340331102 in words is "twenty-one billion, three hundred forty million, three hundred thirty-one thousand, one hundred two".