121601453719 has 2 divisors, whose sum is σ = 121601453720. Its totient is φ = 121601453718.

The previous prime is 121601453717. The next prime is 121601453803. The reversal of 121601453719 is 917354106121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121601453719 - 2¹ = 121601453717 is a prime.

It is a super-2 number, since 2×121601453719² (a number of 23 digits) contains 22 as substring.

Together with 121601453717, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121601453717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60800726859 + 60800726860.

It is an arithmetic number, because the mean of its divisors is an integer number (60800726860).

Almost surely, 2^121601453719 is an apocalyptic number.

121601453719 is a deficient number, since it is larger than the sum of its proper divisors (1).

121601453719 is an equidigital number, since it uses as much as digits as its factorization.

121601453719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 121601453719 in words is "one hundred twenty-one billion, six hundred one million, four hundred fifty-three thousand, seven hundred nineteen".