121321133133 has 16 divisors (see below), whose sum is σ = 161998252416. Its totient is φ = 80762443200.

The previous prime is 121321133113. The next prime is 121321133161. The reversal of 121321133133 is 331331123121.

It is not a de Polignac number, because 121321133133 - 2¹⁰ = 121321132109 is a prime.

It is a super-2 number, since 2×121321133133² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321133113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16760391 + ... + 16767627.

It is an arithmetic number, because the mean of its divisors is an integer number (10124890776).

Almost surely, 2^121321133133 is an apocalyptic number.

It is an amenable number.

121321133133 is a deficient number, since it is larger than the sum of its proper divisors (40677119283).

121321133133 is an equidigital number, since it uses as much as digits as its factorization.

121321133133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14644.

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

Adding to 121321133133 its reverse (331331123121), we get a palindrome (452652256254).

The spelling of 121321133133 in words is "one hundred twenty-one billion, three hundred twenty-one million, one hundred thirty-three thousand, one hundred thirty-three".