21412313340 has 96 divisors (see below), whose sum is σ = 68847287040. Its totient is φ = 4917657600.

The previous prime is 21412313333. The next prime is 21412313341. The reversal of 21412313340 is 4331321412.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21412313340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21412313341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 841221 + ... + 866300.

It is an arithmetic number, because the mean of its divisors is an integer number (717159240).

Almost surely, 2^21412313340 is an apocalyptic number.

21412313340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21412313340 is an abundant number, since it is smaller than the sum of its proper divisors (47434973700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21412313340 is a wasteful number, since it uses less digits than its factorization.

21412313340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707563 (or 1707561 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21412313340 its reverse (4331321412), we get a palindrome (25743634752).

The spelling of 21412313340 in words is "twenty-one billion, four hundred twelve million, three hundred thirteen thousand, three hundred forty".