12201121021013 has 2 divisors, whose sum is σ = 12201121021014. Its totient is φ = 12201121021012.

The previous prime is 12201121020989. The next prime is 12201121021049. The reversal of 12201121021013 is 31012012110221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11623578779569 + 577542241444 = 3409337^2 + 759962^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12201121021013 is a prime.

It is a super-3 number, since 3×12201121021013³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12201121020982 and 12201121021000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12201121021093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100560510506 + 6100560510507.

It is an arithmetic number, because the mean of its divisors is an integer number (6100560510507).

Almost surely, 2^{12201121021013} is an apocalyptic number.

It is an amenable number.

12201121021013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201121021013 is an equidigital number, since it uses as much as digits as its factorization.

12201121021013 is an evil number, because the sum of its binary digits is even.

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

Adding to 12201121021013 its reverse (31012012110221), we get a palindrome (43213133131234).

The spelling of 12201121021013 in words is "twelve trillion, two hundred one billion, one hundred twenty-one million, twenty-one thousand, thirteen".