21143314012 has 24 divisors (see below), whose sum is σ = 37158649472. Its totient is φ = 10526630400.

The previous prime is 21143314007. The next prime is 21143314063. The reversal of 21143314012 is 21041334112.

It is a super-2 number, since 2×21143314012² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1232212 + ... + 1249252.

Almost surely, 2^21143314012 is an apocalyptic number.

It is an amenable number.

21143314012 is a deficient number, since it is larger than the sum of its proper divisors (16015335460).

21143314012 is a wasteful number, since it uses less digits than its factorization.

21143314012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18349 (or 18347 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21143314012 its reverse (21041334112), we get a palindrome (42184648124).

The spelling of 21143314012 in words is "twenty-one billion, one hundred forty-three million, three hundred fourteen thousand, twelve".