121312540333133 has 4 divisors (see below), whose sum is σ = 121314312707100. Its totient is φ = 121310767959168.

The previous prime is 121312540333097. The next prime is 121312540333139. The reversal of 121312540333133 is 331333045213121.

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 17800188826729 + 103512351506404 = 4219027^2 + 10174102^2 .

It is a cyclic number.

It is not a de Polignac number, because 121312540333133 - 2³² = 121308245365837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121312540333093 and 121312540333102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121312540333139) 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, 886084310 + ... + 886221207.

It is an arithmetic number, because the mean of its divisors is an integer number (30328578176775).

Almost surely, 2^{121312540333133} is an apocalyptic number.

It is an amenable number.

121312540333133 is a deficient number, since it is larger than the sum of its proper divisors (1772373967).

121312540333133 is an equidigital number, since it uses as much as digits as its factorization.

121312540333133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772373966.

The product of its (nonzero) digits is 58320, while the sum is 35.

Adding to 121312540333133 its reverse (331333045213121), we get a palindrome (452645585546254).

The spelling of 121312540333133 in words is "one hundred twenty-one trillion, three hundred twelve billion, five hundred forty million, three hundred thirty-three thousand, one hundred thirty-three".