121013352442 has 4 divisors (see below), whose sum is σ = 181520028666. Its totient is φ = 60506676220.

The previous prime is 121013352437. The next prime is 121013352443. The reversal of 121013352442 is 244253310121.

121013352442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244253310121 = 1489 ⋅164038489.

It can be written as a sum of positive squares in only one way, i.e., 70622531001 + 50390821441 = 265749^2 + 224479^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121013352442.

It is not an unprimeable number, because it can be changed into a prime (121013352443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30253338109 + ... + 30253338112.

Almost surely, 2^121013352442 is an apocalyptic number.

121013352442 is a deficient number, since it is larger than the sum of its proper divisors (60506676224).

121013352442 is an equidigital number, since it uses as much as digits as its factorization.

121013352442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60506676223.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 121013352442 its reverse (244253310121), we get a palindrome (365266662563).

The spelling of 121013352442 in words is "one hundred twenty-one billion, thirteen million, three hundred fifty-two thousand, four hundred forty-two".