12722057 has 4 divisors (see below), whose sum is σ = 12734160. Its totient is φ = 12709956.

The previous prime is 12722053. The next prime is 12722071. The reversal of 12722057 is 75022721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12722057 - 2² = 12722053 is a prime.

It is a super-2 number, since 2×12722057² = 323701468622498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12722053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4307 + ... + 6632.

It is an arithmetic number, because the mean of its divisors is an integer number (3183540).

Almost surely, 2^12722057 is an apocalyptic number.

It is an amenable number.

12722057 is a deficient number, since it is larger than the sum of its proper divisors (12103).

12722057 is a wasteful number, since it uses less digits than its factorization.

12722057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12102.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 12722057 is about 3566.7992654479. The cubic root of 12722057 is about 233.4456463839.

Adding to 12722057 its reverse (75022721), we get a palindrome (87744778).

The spelling of 12722057 in words is "twelve million, seven hundred twenty-two thousand, fifty-seven".