121333113123 has 4 divisors (see below), whose sum is σ = 161777484168. Its totient is φ = 80888742080.

The previous prime is 121333113103. The next prime is 121333113151. The reversal of 121333113123 is 321311333121.

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 121333113123 - 2¹⁴ = 121333096739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121333113093 and 121333113102.

It is not an unprimeable number, because it can be changed into a prime (121333113103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20222185518 + ... + 20222185523.

It is an arithmetic number, because the mean of its divisors is an integer number (40444371042).

Almost surely, 2^121333113123 is an apocalyptic number.

121333113123 is a deficient number, since it is larger than the sum of its proper divisors (40444371045).

121333113123 is an equidigital number, since it uses as much as digits as its factorization.

121333113123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40444371044.

The product of its digits is 972, while the sum is 24.

Adding to 121333113123 its reverse (321311333121), we get a palindrome (442644446244).

The spelling of 121333113123 in words is "one hundred twenty-one billion, three hundred thirty-three million, one hundred thirteen thousand, one hundred twenty-three".