21093060093097 has 4 divisors (see below), whose sum is σ = 21096791402500. Its totient is φ = 21089328783696.

The previous prime is 21093060093047. The next prime is 21093060093143. The reversal of 21093060093097 is 79039006039012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14437841680656 + 6655218412441 = 3799716^2 + 2579771^2 .

It is a cyclic number.

It is not a de Polignac number, because 21093060093097 - 2⁷ = 21093060092969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21093060093097.

It is not an unprimeable number, because it can be changed into a prime (21093060093047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1865646222 + ... + 1865657527.

It is an arithmetic number, because the mean of its divisors is an integer number (5274197850625).

Almost surely, 2^{21093060093097} is an apocalyptic number.

It is an amenable number.

21093060093097 is a deficient number, since it is larger than the sum of its proper divisors (3731309403).

21093060093097 is an equidigital number, since it uses as much as digits as its factorization.

21093060093097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3731309402.

The product of its (nonzero) digits is 551124, while the sum is 49.

The spelling of 21093060093097 in words is "twenty-one trillion, ninety-three billion, sixty million, ninety-three thousand, ninety-seven".