12211256573 has 8 divisors (see below), whose sum is σ = 12512649600. Its totient is φ = 11910655008.

The previous prime is 12211256539. The next prime is 12211256591. The reversal of 12211256573 is 37565211221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12211256573 - 2¹² = 12211252477 is a prime.

It is a super-2 number, since 2×12211256573² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211256273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166568 + ... + 228401.

It is an arithmetic number, because the mean of its divisors is an integer number (1564081200).

Almost surely, 2^12211256573 is an apocalyptic number.

It is an amenable number.

12211256573 is a deficient number, since it is larger than the sum of its proper divisors (301393027).

12211256573 is an equidigital number, since it uses as much as digits as its factorization.

12211256573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395731.

The product of its digits is 25200, while the sum is 35.

Adding to 12211256573 its reverse (37565211221), we get a palindrome (49776467794).

The spelling of 12211256573 in words is "twelve billion, two hundred eleven million, two hundred fifty-six thousand, five hundred seventy-three".