121340310461 has 2 divisors, whose sum is σ = 121340310462. Its totient is φ = 121340310460.

The previous prime is 121340310431. The next prime is 121340310523. The reversal of 121340310461 is 164013043121.

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., 112687776100 + 8652534361 = 335690^2 + 93019^2 .

It is an emirp because it is prime and its reverse (164013043121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121340310461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121340310461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121340310431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60670155230 + 60670155231.

It is an arithmetic number, because the mean of its divisors is an integer number (60670155231).

Almost surely, 2^121340310461 is an apocalyptic number.

It is an amenable number.

121340310461 is a deficient number, since it is larger than the sum of its proper divisors (1).

121340310461 is an equidigital number, since it uses as much as digits as its factorization.

121340310461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 121340310461 its reverse (164013043121), we get a palindrome (285353353582).

The spelling of 121340310461 in words is "one hundred twenty-one billion, three hundred forty million, three hundred ten thousand, four hundred sixty-one".