21311144102 has 8 divisors (see below), whose sum is σ = 33069016800. Its totient is φ = 10288138504.

The previous prime is 21311144093. The next prime is 21311144167. The reversal of 21311144102 is 20144111312.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183716702 + ... + 183716817.

It is an arithmetic number, because the mean of its divisors is an integer number (4133627100).

Almost surely, 2^21311144102 is an apocalyptic number.

21311144102 is a deficient number, since it is larger than the sum of its proper divisors (11757872698).

21311144102 is a wasteful number, since it uses less digits than its factorization.

21311144102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367433550.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21311144102 its reverse (20144111312), we get a palindrome (41455255414).

The spelling of 21311144102 in words is "twenty-one billion, three hundred eleven million, one hundred forty-four thousand, one hundred two".