21727321302311 has 2 divisors, whose sum is σ = 21727321302312. Its totient is φ = 21727321302310.

The previous prime is 21727321302263. The next prime is 21727321302343. The reversal of 21727321302311 is 11320312372712.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21727321302311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21727321302391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10863660651155 + 10863660651156.

It is an arithmetic number, because the mean of its divisors is an integer number (10863660651156).

Almost surely, 2^{21727321302311} is an apocalyptic number.

21727321302311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21727321302311 is an equidigital number, since it uses as much as digits as its factorization.

21727321302311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The spelling of 21727321302311 in words is "twenty-one trillion, seven hundred twenty-seven billion, three hundred twenty-one million, three hundred two thousand, three hundred eleven".