21033414012 has 24 divisors (see below), whose sum is σ = 52853194576. Its totient is φ = 6471819648.

The previous prime is 21033414011. The next prime is 21033414053. The reversal of 21033414012 is 21041433012.

It is a super-2 number, since 2×21033414012² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21033414012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033414011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67414633 + ... + 67414944.

Almost surely, 2^21033414012 is an apocalyptic number.

It is an amenable number.

21033414012 is an abundant number, since it is smaller than the sum of its proper divisors (31819780564).

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

21033414012 is a wasteful number, since it uses less digits than its factorization.

21033414012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134829597 (or 134829595 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21033414012 its reverse (21041433012), we get a palindrome (42074847024).

The spelling of 21033414012 in words is "twenty-one billion, thirty-three million, four hundred fourteen thousand, twelve".