1213330333121 has 4 divisors (see below), whose sum is σ = 1213617244500. Its totient is φ = 1213043421744.

The previous prime is 1213330333073. The next prime is 1213330333133.

1213330333121 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1085388912400 + 127941420721 = 1041820^2 + 357689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213330333121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213330333151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143449346 + ... + 143457803.

It is an arithmetic number, because the mean of its divisors is an integer number (303404311125).

Almost surely, 2^{1213330333121} is an apocalyptic number.

It is an amenable number.

1213330333121 is a deficient number, since it is larger than the sum of its proper divisors (286911379).

1213330333121 is an equidigital number, since it uses as much as digits as its factorization.

1213330333121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286911378.

The product of its (nonzero) digits is 2916, while the sum is 26.

It can be divided in two parts, 1213330 and 333121, that added together give a palindrome (1546451).

The spelling of 1213330333121 in words is "one trillion, two hundred thirteen billion, three hundred thirty million, three hundred thirty-three thousand, one hundred twenty-one".