121212010013 has 2 divisors, whose sum is σ = 121212010014. Its totient is φ = 121212010012.

The previous prime is 121212009977. The next prime is 121212010019. The reversal of 121212010013 is 310010212121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96719134009 + 24492876004 = 310997^2 + 156502^2 .

It is a cyclic number.

It is not a de Polignac number, because 121212010013 - 2¹⁸ = 121211747869 is a prime.

It is a super-2 number, since 2×121212010013² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121212010013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121212010019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606005006 + 60606005007.

It is an arithmetic number, because the mean of its divisors is an integer number (60606005007).

Almost surely, 2^121212010013 is an apocalyptic number.

It is an amenable number.

121212010013 is a deficient number, since it is larger than the sum of its proper divisors (1).

121212010013 is an equidigital number, since it uses as much as digits as its factorization.

121212010013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 121212010013 its reverse (310010212121), we get a palindrome (431222222134).

The spelling of 121212010013 in words is "one hundred twenty-one billion, two hundred twelve million, ten thousand, thirteen".