121222110013 has 2 divisors, whose sum is σ = 121222110014. Its totient is φ = 121222110012.

The previous prime is 121222109999. The next prime is 121222110067. The reversal of 121222110013 is 310011222121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87827471449 + 33394638564 = 296357^2 + 182742^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121222110013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121222110313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611055006 + 60611055007.

It is an arithmetic number, because the mean of its divisors is an integer number (60611055007).

Almost surely, 2^121222110013 is an apocalyptic number.

It is an amenable number.

121222110013 is a deficient number, since it is larger than the sum of its proper divisors (1).

121222110013 is an equidigital number, since it uses as much as digits as its factorization.

121222110013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 121222110013 its reverse (310011222121), we get a palindrome (431233332134).

The spelling of 121222110013 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred ten thousand, thirteen".