21300111033111 has 6 divisors (see below), whose sum is σ = 30766827047840. Its totient is φ = 14200074022068.

The previous prime is 21300111033031. The next prime is 21300111033169. The reversal of 21300111033111 is 11133011100312.

21300111033111 is a `hidden beast` number, since 2 + 1 + 300 + 11 + 10 + 331 + 11 = 666.

It is not a de Polignac number, because 21300111033111 - 2⁷ = 21300111032983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300111033011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1183339501831 + ... + 1183339501848.

Almost surely, 2^{21300111033111} is an apocalyptic number.

21300111033111 is a deficient number, since it is larger than the sum of its proper divisors (9466716014729).

21300111033111 is a wasteful number, since it uses less digits than its factorization.

21300111033111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2366679003685 (or 2366679003682 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 21300111033111 its reverse (11133011100312), we get a palindrome (32433122133423).

The spelling of 21300111033111 in words is "twenty-one trillion, three hundred billion, one hundred eleven million, thirty-three thousand, one hundred eleven".