12231121201001 has 4 divisors (see below), whose sum is σ = 12461897072772. Its totient is φ = 12000345329232.

The previous prime is 12231121200979. The next prime is 12231121201009. The reversal of 12231121201001 is 10010212113221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4788722539225 + 7442398661776 = 2188315^2 + 2728076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12231121201001 is a prime.

It is a super-2 number, since 2×12231121201001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12231121201009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115387935806 + ... + 115387935911.

It is an arithmetic number, because the mean of its divisors is an integer number (3115474268193).

Almost surely, 2^{12231121201001} is an apocalyptic number.

It is an amenable number.

12231121201001 is a deficient number, since it is larger than the sum of its proper divisors (230775871771).

12231121201001 is an equidigital number, since it uses as much as digits as its factorization.

12231121201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230775871770.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12231121201001 its reverse (10010212113221), we get a palindrome (22241333314222).

The spelling of 12231121201001 in words is "twelve trillion, two hundred thirty-one billion, one hundred twenty-one million, two hundred one thousand, one".