121220463633719 has 4 divisors (see below), whose sum is σ = 121270492717296. Its totient is φ = 121170434550144.

The previous prime is 121220463633707. The next prime is 121220463633751. The reversal of 121220463633719 is 917336364022121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121220463633719 - 2³⁶ = 121151744156983 is a prime.

It is a super-2 number, since 2×121220463633719² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220463638719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25014538154 + ... + 25014542999.

It is an arithmetic number, because the mean of its divisors is an integer number (30317623179324).

Almost surely, 2^{121220463633719} is an apocalyptic number.

121220463633719 is a deficient number, since it is larger than the sum of its proper divisors (50029083577).

121220463633719 is an equidigital number, since it uses as much as digits as its factorization.

121220463633719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50029083576.

The product of its (nonzero) digits is 1959552, while the sum is 50.

The spelling of 121220463633719 in words is "one hundred twenty-one trillion, two hundred twenty billion, four hundred sixty-three million, six hundred thirty-three thousand, seven hundred nineteen".