21072933311 has 2 divisors, whose sum is σ = 21072933312. Its totient is φ = 21072933310.

The previous prime is 21072933239. The next prime is 21072933361. The reversal of 21072933311 is 11333927012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21072933311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21072933361) 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, 10536466655 + 10536466656.

It is an arithmetic number, because the mean of its divisors is an integer number (10536466656).

Almost surely, 2^21072933311 is an apocalyptic number.

21072933311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21072933311 is an equidigital number, since it uses as much as digits as its factorization.

21072933311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 32.

The spelling of 21072933311 in words is "twenty-one billion, seventy-two million, nine hundred thirty-three thousand, three hundred eleven".