21002133303301 has 2 divisors, whose sum is σ = 21002133303302. Its totient is φ = 21002133303300.

The previous prime is 21002133303253. The next prime is 21002133303367. The reversal of 21002133303301 is 10330333120012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18075549856225 + 2926583447076 = 4251535^2 + 1710726^2 .

It is a cyclic number.

It is not a de Polignac number, because 21002133303301 - 2²⁹ = 21001596432389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21002133303001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501066651650 + 10501066651651.

It is an arithmetic number, because the mean of its divisors is an integer number (10501066651651).

Almost surely, 2^{21002133303301} is an apocalyptic number.

It is an amenable number.

21002133303301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21002133303301 is an equidigital number, since it uses as much as digits as its factorization.

21002133303301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21002133303301 its reverse (10330333120012), we get a palindrome (31332466423313).

The spelling of 21002133303301 in words is "twenty-one trillion, two billion, one hundred thirty-three million, three hundred three thousand, three hundred one".