21106147319 has 2 divisors, whose sum is σ = 21106147320. Its totient is φ = 21106147318.

The previous prime is 21106147289. The next prime is 21106147339. The reversal of 21106147319 is 91374160112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21106147319 is a prime.

It is a super-2 number, since 2×21106147319² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21106147339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10553073659 + 10553073660.

It is an arithmetic number, because the mean of its divisors is an integer number (10553073660).

Almost surely, 2^21106147319 is an apocalyptic number.

21106147319 is a deficient number, since it is larger than the sum of its proper divisors (1).

21106147319 is an equidigital number, since it uses as much as digits as its factorization.

21106147319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The spelling of 21106147319 in words is "twenty-one billion, one hundred six million, one hundred forty-seven thousand, three hundred nineteen".