121346948621 has 2 divisors, whose sum is σ = 121346948622. Its totient is φ = 121346948620.

The previous prime is 121346948609. The next prime is 121346948683. The reversal of 121346948621 is 126849643121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118480524100 + 2866424521 = 344210^2 + 53539^2 .

It is a cyclic number.

It is not a de Polignac number, because 121346948621 - 2³⁰ = 120273206797 is a prime.

It is a super-2 number, since 2×121346948621² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121346941621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60673474310 + 60673474311.

It is an arithmetic number, because the mean of its divisors is an integer number (60673474311).

Almost surely, 2^121346948621 is an apocalyptic number.

It is an amenable number.

121346948621 is a deficient number, since it is larger than the sum of its proper divisors (1).

121346948621 is an equidigital number, since it uses as much as digits as its factorization.

121346948621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 47.

The spelling of 121346948621 in words is "one hundred twenty-one billion, three hundred forty-six million, nine hundred forty-eight thousand, six hundred twenty-one".