21201330047 has 2 divisors, whose sum is σ = 21201330048. Its totient is φ = 21201330046.

The previous prime is 21201329923. The next prime is 21201330097. The reversal of 21201330047 is 74003310212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21201330047 - 2²⁶ = 21134221183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21201330097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600665023 + 10600665024.

It is an arithmetic number, because the mean of its divisors is an integer number (10600665024).

Almost surely, 2^21201330047 is an apocalyptic number.

21201330047 is a deficient number, since it is larger than the sum of its proper divisors (1).

21201330047 is an equidigital number, since it uses as much as digits as its factorization.

21201330047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

Adding to 21201330047 its reverse (74003310212), we get a palindrome (95204640259).

The spelling of 21201330047 in words is "twenty-one billion, two hundred one million, three hundred thirty thousand, forty-seven".