12121200010033 has 4 divisors (see below), whose sum is σ = 12121229730420. Its totient is φ = 12121170289648.

The previous prime is 12121200010021. The next prime is 12121200010037. The reversal of 12121200010033 is 33001000212121.

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 5564281830129 + 6556918179904 = 2358873^2 + 2560648^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12121200010033 is a prime.

It is a super-2 number, since 2×12121200010033² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12121200009989 and 12121200010016.

It is not an unprimeable number, because it can be changed into a prime (12121200010037) 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, 14239798 + ... + 15066991.

It is an arithmetic number, because the mean of its divisors is an integer number (3030307432605).

Almost surely, 2^{12121200010033} is an apocalyptic number.

It is an amenable number.

12121200010033 is a deficient number, since it is larger than the sum of its proper divisors (29720387).

12121200010033 is an equidigital number, since it uses as much as digits as its factorization.

12121200010033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29720386.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12121200010033 its reverse (33001000212121), we get a palindrome (45122200222154).

The spelling of 12121200010033 in words is "twelve trillion, one hundred twenty-one billion, two hundred million, ten thousand, thirty-three".