21301037267 has 2 divisors, whose sum is σ = 21301037268. Its totient is φ = 21301037266.

The previous prime is 21301037221. The next prime is 21301037269. The reversal of 21301037267 is 76273010312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21301037267 - 2¹⁰ = 21301036243 is a prime.

Together with 21301037269, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21301037269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650518633 + 10650518634.

It is an arithmetic number, because the mean of its divisors is an integer number (10650518634).

Almost surely, 2^21301037267 is an apocalyptic number.

21301037267 is a deficient number, since it is larger than the sum of its proper divisors (1).

21301037267 is an equidigital number, since it uses as much as digits as its factorization.

21301037267 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 32.

Adding to 21301037267 its reverse (76273010312), we get a palindrome (97574047579).

The spelling of 21301037267 in words is "twenty-one billion, three hundred one million, thirty-seven thousand, two hundred sixty-seven".