133121213444331 has 32 divisors (see below), whose sum is σ = 225526438010880. Its totient is φ = 76023356822208.

The previous prime is 133121213444321. The next prime is 133121213444393. The reversal of 133121213444331 is 133444312121331.

133121213444331 is a `hidden beast` number, since 1 + 3 + 3 + 1 + 2 + 1 + 213 + 4 + 4 + 433 + 1 = 666.

It is not a de Polignac number, because 133121213444331 - 2⁹ = 133121213443819 is a prime.

It is a super-2 number, since 2×133121213444331² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133121213444321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212223051 + ... + 212849396.

It is an arithmetic number, because the mean of its divisors is an integer number (7047701187840).

Almost surely, 2^{133121213444331} is an apocalyptic number.

133121213444331 is a deficient number, since it is larger than the sum of its proper divisors (92405224566549).

133121213444331 is a wasteful number, since it uses less digits than its factorization.

133121213444331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425074120 (or 425074114 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

Adding to 133121213444331 its reverse (133444312121331), we get a palindrome (266565525565662).

The spelling of 133121213444331 in words is "one hundred thirty-three trillion, one hundred twenty-one billion, two hundred thirteen million, four hundred forty-four thousand, three hundred thirty-one".