21034401404311 has 2 divisors, whose sum is σ = 21034401404312. Its totient is φ = 21034401404310.

The previous prime is 21034401404251. The next prime is 21034401404327. The reversal of 21034401404311 is 11340410443012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21034401404311 - 2²³ = 21034393015703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21034401404311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21034401404351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10517200702155 + 10517200702156.

It is an arithmetic number, because the mean of its divisors is an integer number (10517200702156).

Almost surely, 2^{21034401404311} is an apocalyptic number.

21034401404311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21034401404311 is an equidigital number, since it uses as much as digits as its factorization.

21034401404311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21034401404311 its reverse (11340410443012), we get a palindrome (32374811847323).

The spelling of 21034401404311 in words is "twenty-one trillion, thirty-four billion, four hundred one million, four hundred four thousand, three hundred eleven".