21133332301391 has 2 divisors, whose sum is σ = 21133332301392. Its totient is φ = 21133332301390.

The previous prime is 21133332301373. The next prime is 21133332301399. The reversal of 21133332301391 is 19310323333112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21133332301391 is a prime.

It is a super-2 number, since 2×21133332301391² (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 (21133332301399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566666150695 + 10566666150696.

It is an arithmetic number, because the mean of its divisors is an integer number (10566666150696).

Almost surely, 2^{21133332301391} is an apocalyptic number.

21133332301391 is a deficient number, since it is larger than the sum of its proper divisors (1).

21133332301391 is an equidigital number, since it uses as much as digits as its factorization.

21133332301391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 35.

The spelling of 21133332301391 in words is "twenty-one trillion, one hundred thirty-three billion, three hundred thirty-two million, three hundred one thousand, three hundred ninety-one".