21073267051 has 2 divisors, whose sum is σ = 21073267052. Its totient is φ = 21073267050.

The previous prime is 21073267037. The next prime is 21073267063. The reversal of 21073267051 is 15076237012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21073267051 - 2¹⁵ = 21073234283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21073266998 and 21073267016.

It is not a weakly prime, because it can be changed into another prime (21073267081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10536633525 + 10536633526.

It is an arithmetic number, because the mean of its divisors is an integer number (10536633526).

Almost surely, 2^21073267051 is an apocalyptic number.

21073267051 is a deficient number, since it is larger than the sum of its proper divisors (1).

21073267051 is an equidigital number, since it uses as much as digits as its factorization.

21073267051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The spelling of 21073267051 in words is "twenty-one billion, seventy-three million, two hundred sixty-seven thousand, fifty-one".