21033133334 has 64 divisors (see below), whose sum is σ = 33902668800. Its totient is φ = 9765816192.

The previous prime is 21033133313. The next prime is 21033133367. The reversal of 21033133334 is 43333133012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71785292 + ... + 71785584.

It is an arithmetic number, because the mean of its divisors is an integer number (529729200).

Almost surely, 2^21033133334 is an apocalyptic number.

21033133334 is a deficient number, since it is larger than the sum of its proper divisors (12869535466).

21033133334 is a wasteful number, since it uses less digits than its factorization.

21033133334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669.

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 21033133334 its reverse (43333133012), we get a palindrome (64366266346).

The spelling of 21033133334 in words is "twenty-one billion, thirty-three million, one hundred thirty-three thousand, three hundred thirty-four".