21263242032211 has 2 divisors, whose sum is σ = 21263242032212. Its totient is φ = 21263242032210.

The previous prime is 21263242032199. The next prime is 21263242032233. The reversal of 21263242032211 is 11223024236212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21263242032211 - 2²⁵ = 21263208477779 is a prime.

It is not a weakly prime, because it can be changed into another prime (21263242032311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10631621016105 + 10631621016106.

It is an arithmetic number, because the mean of its divisors is an integer number (10631621016106).

Almost surely, 2^{21263242032211} is an apocalyptic number.

21263242032211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21263242032211 is an equidigital number, since it uses as much as digits as its factorization.

21263242032211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 21263242032211 its reverse (11223024236212), we get a palindrome (32486266268423).

The spelling of 21263242032211 in words is "twenty-one trillion, two hundred sixty-three billion, two hundred forty-two million, thirty-two thousand, two hundred eleven".