21004053013301 has 2 divisors, whose sum is σ = 21004053013302. Its totient is φ = 21004053013300.

The previous prime is 21004053013217. The next prime is 21004053013331. The reversal of 21004053013301 is 10331035040012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20144603499076 + 859449514225 = 4488274^2 + 927065^2 .

It is a cyclic number.

It is not a de Polignac number, because 21004053013301 - 2¹⁴ = 21004052996917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21004053013331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10502026506650 + 10502026506651.

It is an arithmetic number, because the mean of its divisors is an integer number (10502026506651).

Almost surely, 2^{21004053013301} is an apocalyptic number.

It is an amenable number.

21004053013301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21004053013301 is an equidigital number, since it uses as much as digits as its factorization.

21004053013301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 21004053013301 its reverse (10331035040012), we get a palindrome (31335088053313).

The spelling of 21004053013301 in words is "twenty-one trillion, four billion, fifty-three million, thirteen thousand, three hundred one".