21303211233301 has 2 divisors, whose sum is σ = 21303211233302. Its totient is φ = 21303211233300.

The previous prime is 21303211233263. The next prime is 21303211233307. The reversal of 21303211233301 is 10333211230312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10749224517201 + 10553986716100 = 3278601^2 + 3248690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21303211233301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21303211233307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651605616650 + 10651605616651.

It is an arithmetic number, because the mean of its divisors is an integer number (10651605616651).

Almost surely, 2^{21303211233301} is an apocalyptic number.

It is an amenable number.

21303211233301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21303211233301 is an equidigital number, since it uses as much as digits as its factorization.

21303211233301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21303211233301 its reverse (10333211230312), we get a palindrome (31636422463613).

The spelling of 21303211233301 in words is "twenty-one trillion, three hundred three billion, two hundred eleven million, two hundred thirty-three thousand, three hundred one".