12221026601 has 16 divisors (see below), whose sum is σ = 14072160000. Its totient is φ = 10396339200.

The previous prime is 12221026547. The next prime is 12221026627. The reversal of 12221026601 is 10662012221.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221026601 is a prime.

It is a super-2 number, since 2×12221026601² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12221025601) 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, 1315565 + ... + 1324821.

It is an arithmetic number, because the mean of its divisors is an integer number (879510000).

Almost surely, 2^12221026601 is an apocalyptic number.

It is an amenable number.

12221026601 is a deficient number, since it is larger than the sum of its proper divisors (1851133399).

12221026601 is a wasteful number, since it uses less digits than its factorization.

12221026601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10664.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 12221026601 its reverse (10662012221), we get a palindrome (22883038822).

The spelling of 12221026601 in words is "twelve billion, two hundred twenty-one million, twenty-six thousand, six hundred one".