121121331130133 has 4 divisors (see below), whose sum is σ = 125297928755340. Its totient is φ = 116944733504928.

The previous prime is 121121331130087. The next prime is 121121331130141. The reversal of 121121331130133 is 331031133121121.

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 78327845491204 + 42793485638929 = 8850302^2 + 6541673^2 .

It is a cyclic number.

It is not a de Polignac number, because 121121331130133 - 2⁶ = 121121331130069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121331130433) 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, 2088298812560 + ... + 2088298812617.

It is an arithmetic number, because the mean of its divisors is an integer number (31324482188835).

Almost surely, 2^{121121331130133} is an apocalyptic number.

It is an amenable number.

121121331130133 is a deficient number, since it is larger than the sum of its proper divisors (4176597625207).

121121331130133 is an equidigital number, since it uses as much as digits as its factorization.

121121331130133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4176597625206.

The product of its (nonzero) digits is 972, while the sum is 26.

Adding to 121121331130133 its reverse (331031133121121), we get a palindrome (452152464251254).

The spelling of 121121331130133 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, three hundred thirty-one million, one hundred thirty thousand, one hundred thirty-three".