21303142412 has 24 divisors (see below), whose sum is σ = 37372104000. Its totient is φ = 10625431376.

The previous prime is 21303142411. The next prime is 21303142417. The reversal of 21303142412 is 21424130312.

It is not an unprimeable number, because it can be changed into a prime (21303142411) 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, 3378839 + ... + 3385137.

It is an arithmetic number, because the mean of its divisors is an integer number (1557171000).

Almost surely, 2^21303142412 is an apocalyptic number.

It is an amenable number.

21303142412 is a deficient number, since it is larger than the sum of its proper divisors (16068961588).

21303142412 is a wasteful number, since it uses less digits than its factorization.

21303142412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8245 (or 8243 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21303142412 its reverse (21424130312), we get a palindrome (42727272724).

The spelling of 21303142412 in words is "twenty-one billion, three hundred three million, one hundred forty-two thousand, four hundred twelve".