121351225013 has 2 divisors, whose sum is σ = 121351225014. Its totient is φ = 121351225012.

The previous prime is 121351224997. The next prime is 121351225081. The reversal of 121351225013 is 310522153121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111143557924 + 10207667089 = 333382^2 + 101033^2 .

It is an emirp because it is prime and its reverse (310522153121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121351225013 - 2⁴ = 121351224997 is a prime.

It is a super-3 number, since 3×121351225013³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121351225213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60675612506 + 60675612507.

It is an arithmetic number, because the mean of its divisors is an integer number (60675612507).

Almost surely, 2^121351225013 is an apocalyptic number.

It is an amenable number.

121351225013 is a deficient number, since it is larger than the sum of its proper divisors (1).

121351225013 is an equidigital number, since it uses as much as digits as its factorization.

121351225013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 121351225013 its reverse (310522153121), we get a palindrome (431873378134).

The spelling of 121351225013 in words is "one hundred twenty-one billion, three hundred fifty-one million, two hundred twenty-five thousand, thirteen".