21134223303211 has 2 divisors, whose sum is σ = 21134223303212. Its totient is φ = 21134223303210.

The previous prime is 21134223303209. The next prime is 21134223303269. The reversal of 21134223303211 is 11230332243112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21134223303211 - 2¹ = 21134223303209 is a prime.

Together with 21134223303209, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21134223303211.

It is not a weakly prime, because it can be changed into another prime (21134323303211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10567111651605 + 10567111651606.

It is an arithmetic number, because the mean of its divisors is an integer number (10567111651606).

Almost surely, 2^{21134223303211} is an apocalyptic number.

21134223303211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21134223303211 is an equidigital number, since it uses as much as digits as its factorization.

21134223303211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 21134223303211 its reverse (11230332243112), we get a palindrome (32364555546323).

The spelling of 21134223303211 in words is "twenty-one trillion, one hundred thirty-four billion, two hundred twenty-three million, three hundred three thousand, two hundred eleven".