121761635339 has 2 divisors, whose sum is σ = 121761635340. Its totient is φ = 121761635338.

The previous prime is 121761635321. The next prime is 121761635341. The reversal of 121761635339 is 933536167121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121761635339 is a prime.

It is a super-2 number, since 2×121761635339² (a number of 23 digits) contains 22 as substring.

Together with 121761635341, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121761635293 and 121761635302.

It is not a weakly prime, because it can be changed into another prime (121761635309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60880817669 + 60880817670.

It is an arithmetic number, because the mean of its divisors is an integer number (60880817670).

Almost surely, 2^121761635339 is an apocalyptic number.

121761635339 is a deficient number, since it is larger than the sum of its proper divisors (1).

121761635339 is an equidigital number, since it uses as much as digits as its factorization.

121761635339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612360, while the sum is 47.

The spelling of 121761635339 in words is "one hundred twenty-one billion, seven hundred sixty-one million, six hundred thirty-five thousand, three hundred thirty-nine".