21123300046727 has 2 divisors, whose sum is σ = 21123300046728. Its totient is φ = 21123300046726.

The previous prime is 21123300046699. The next prime is 21123300046781. The reversal of 21123300046727 is 72764000332112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21123300046727 - 2¹² = 21123300042631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21123300040727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561650023363 + 10561650023364.

It is an arithmetic number, because the mean of its divisors is an integer number (10561650023364).

Almost surely, 2^{21123300046727} is an apocalyptic number.

21123300046727 is a deficient number, since it is larger than the sum of its proper divisors (1).

21123300046727 is an equidigital number, since it uses as much as digits as its factorization.

21123300046727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 38.

Adding to 21123300046727 its reverse (72764000332112), we get a palindrome (93887300378839).

The spelling of 21123300046727 in words is "twenty-one trillion, one hundred twenty-three billion, three hundred million, forty-six thousand, seven hundred twenty-seven".