21334111369253 has 2 divisors, whose sum is σ = 21334111369254. Its totient is φ = 21334111369252.

The previous prime is 21334111369247. The next prime is 21334111369261. The reversal of 21334111369253 is 35296311143312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20204467623844 + 1129643745409 = 4494938^2 + 1062847^2 .

It is a cyclic number.

It is not a de Polignac number, because 21334111369253 - 2¹⁸ = 21334111107109 is a prime.

It is a super-2 number, since 2×21334111369253² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21334111369283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10667055684626 + 10667055684627.

It is an arithmetic number, because the mean of its divisors is an integer number (10667055684627).

Almost surely, 2^{21334111369253} is an apocalyptic number.

It is an amenable number.

21334111369253 is a deficient number, since it is larger than the sum of its proper divisors (1).

21334111369253 is an equidigital number, since it uses as much as digits as its factorization.

21334111369253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 44.

The spelling of 21334111369253 in words is "twenty-one trillion, three hundred thirty-four billion, one hundred eleven million, three hundred sixty-nine thousand, two hundred fifty-three".