27921101233 has 2 divisors, whose sum is σ = 27921101234. Its totient is φ = 27921101232.

The previous prime is 27921101207. The next prime is 27921101249. The reversal of 27921101233 is 33210112972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20093629504 + 7827471729 = 141752^2 + 88473^2 .

It is a cyclic number.

It is not a de Polignac number, because 27921101233 - 2²⁵ = 27887546801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27921101195 and 27921101204.

It is not a weakly prime, because it can be changed into another prime (27921101203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13960550616 + 13960550617.

It is an arithmetic number, because the mean of its divisors is an integer number (13960550617).

Almost surely, 2^27921101233 is an apocalyptic number.

It is an amenable number.

27921101233 is a deficient number, since it is larger than the sum of its proper divisors (1).

27921101233 is an equidigital number, since it uses as much as digits as its factorization.

27921101233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 27921101233 in words is "twenty-seven billion, nine hundred twenty-one million, one hundred one thousand, two hundred thirty-three".