21213433014412 has 6 divisors (see below), whose sum is σ = 37123507775228. Its totient is φ = 10606716507204.

The previous prime is 21213433014407. The next prime is 21213433014419. The reversal of 21213433014412 is 21441033431212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21213433014419) 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 as a sum of consecutive naturals, namely, 2651679126798 + ... + 2651679126805.

Almost surely, 2^{21213433014412} is an apocalyptic number.

It is an amenable number.

21213433014412 is a deficient number, since it is larger than the sum of its proper divisors (15910074760816).

21213433014412 is a wasteful number, since it uses less digits than its factorization.

21213433014412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5303358253607 (or 5303358253605 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 21213433014412 its reverse (21441033431212), we get a palindrome (42654466445624).

The spelling of 21213433014412 in words is "twenty-one trillion, two hundred thirteen billion, four hundred thirty-three million, fourteen thousand, four hundred twelve".