121023746689 has 4 divisors (see below), whose sum is σ = 121151544624. Its totient is φ = 120895948756.

The previous prime is 121023746687. The next prime is 121023746737. The reversal of 121023746689 is 986647320121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 986647320121 = 293 ⋅3367396997.

It is a cyclic number.

It is not a de Polignac number, because 121023746689 - 2¹ = 121023746687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121023746687) 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 in 3 ways as a sum of consecutive naturals, for example, 63897547 + ... + 63899440.

It is an arithmetic number, because the mean of its divisors is an integer number (30287886156).

Almost surely, 2^121023746689 is an apocalyptic number.

It is an amenable number.

121023746689 is a deficient number, since it is larger than the sum of its proper divisors (127797935).

121023746689 is an equidigital number, since it uses as much as digits as its factorization.

121023746689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127797934.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 121023746689 in words is "one hundred twenty-one billion, twenty-three million, seven hundred forty-six thousand, six hundred eighty-nine".