21300084717833 has 2 divisors, whose sum is σ = 21300084717834. Its totient is φ = 21300084717832.

The previous prime is 21300084717763. The next prime is 21300084717893. The reversal of 21300084717833 is 33871748000312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19407443430544 + 1892641287289 = 4405388^2 + 1375733^2 .

It is a cyclic number.

It is not a de Polignac number, because 21300084717833 - 2¹² = 21300084713737 is a prime.

It is a super-2 number, since 2×21300084717833² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21300084717893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650042358916 + 10650042358917.

It is an arithmetic number, because the mean of its divisors is an integer number (10650042358917).

Almost surely, 2^{21300084717833} is an apocalyptic number.

It is an amenable number.

21300084717833 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300084717833 is an equidigital number, since it uses as much as digits as its factorization.

21300084717833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 21300084717833 in words is "twenty-one trillion, three hundred billion, eighty-four million, seven hundred seventeen thousand, eight hundred thirty-three".