133121203313 has 16 divisors (see below), whose sum is σ = 152908867584. Its totient is φ = 113526787920.

The previous prime is 133121203249. The next prime is 133121203321. The reversal of 133121203313 is 313302121331.

It is not a de Polignac number, because 133121203313 - 2⁶ = 133121203249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133121203333) 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, 2469656 + ... + 2522982.

It is an arithmetic number, because the mean of its divisors is an integer number (9556804224).

Almost surely, 2^133121203313 is an apocalyptic number.

It is an amenable number.

133121203313 is a deficient number, since it is larger than the sum of its proper divisors (19787664271).

133121203313 is a wasteful number, since it uses less digits than its factorization.

133121203313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55132.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 133121203313 its reverse (313302121331), we get a palindrome (446423324644).

The spelling of 133121203313 in words is "one hundred thirty-three billion, one hundred twenty-one million, two hundred three thousand, three hundred thirteen".