21330013303097 has 2 divisors, whose sum is σ = 21330013303098. Its totient is φ = 21330013303096.

The previous prime is 21330013303021. The next prime is 21330013303121. The reversal of 21330013303097 is 79030331003312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17133398841001 + 4196614462096 = 4139251^2 + 2048564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21330013303097 is a prime.

It is not a weakly prime, because it can be changed into another prime (21330012303097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10665006651548 + 10665006651549.

It is an arithmetic number, because the mean of its divisors is an integer number (10665006651549).

Almost surely, 2^{21330013303097} is an apocalyptic number.

It is an amenable number.

21330013303097 is a deficient number, since it is larger than the sum of its proper divisors (1).

21330013303097 is an equidigital number, since it uses as much as digits as its factorization.

21330013303097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618, while the sum is 35.

The spelling of 21330013303097 in words is "twenty-one trillion, three hundred thirty billion, thirteen million, three hundred three thousand, ninety-seven".