21101120313347 has 2 divisors, whose sum is σ = 21101120313348. Its totient is φ = 21101120313346.

The previous prime is 21101120313289. The next prime is 21101120313373. The reversal of 21101120313347 is 74331302110112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21101120313347 - 2³⁴ = 21083940444163 is a prime.

It is not a weakly prime, because it can be changed into another prime (21101120313947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550560156673 + 10550560156674.

It is an arithmetic number, because the mean of its divisors is an integer number (10550560156674).

Almost surely, 2^{21101120313347} is an apocalyptic number.

21101120313347 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101120313347 is an equidigital number, since it uses as much as digits as its factorization.

21101120313347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

Adding to 21101120313347 its reverse (74331302110112), we get a palindrome (95432422423459).

The spelling of 21101120313347 in words is "twenty-one trillion, one hundred one billion, one hundred twenty million, three hundred thirteen thousand, three hundred forty-seven".