12722319 has 16 divisors (see below), whose sum is σ = 18954240. Its totient is φ = 8433720.

The previous prime is 12722317. The next prime is 12722321. The reversal of 12722319 is 91322721.

It is an interprime number because it is at equal distance from previous prime (12722317) and next prime (12722321).

It is not a de Polignac number, because 12722319 - 2¹ = 12722317 is a prime.

It is a super-2 number, since 2×12722319² = 323714801475522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12722292 and 12722301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3924 + ... + 6390.

It is an arithmetic number, because the mean of its divisors is an integer number (1184640).

Almost surely, 2^12722319 is an apocalyptic number.

12722319 is a deficient number, since it is larger than the sum of its proper divisors (6231921).

12722319 is a wasteful number, since it uses less digits than its factorization.

12722319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667 (or 2661 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 12722319 is about 3566.8359928654. The cubic root of 12722319 is about 233.4472489114.

It can be divided in two parts, 12722 and 319, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 12722319 in words is "twelve million, seven hundred twenty-two thousand, three hundred nineteen".