21121311135319 has 2 divisors, whose sum is σ = 21121311135320. Its totient is φ = 21121311135318.

The previous prime is 21121311135313. The next prime is 21121311135343. The reversal of 21121311135319 is 91353111312112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21121311135319 - 2³¹ = 21119163651671 is a prime.

It is a super-2 number, since 2×21121311135319² (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 (21121311135313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560655567659 + 10560655567660.

It is an arithmetic number, because the mean of its divisors is an integer number (10560655567660).

Almost surely, 2^{21121311135319} is an apocalyptic number.

21121311135319 is a deficient number, since it is larger than the sum of its proper divisors (1).

21121311135319 is an equidigital number, since it uses as much as digits as its factorization.

21121311135319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 34.

The spelling of 21121311135319 in words is "twenty-one trillion, one hundred twenty-one billion, three hundred eleven million, one hundred thirty-five thousand, three hundred nineteen".