20133120113291 has 4 divisors (see below), whose sum is σ = 20136267394992. Its totient is φ = 20129972831592.

The previous prime is 20133120113191. The next prime is 20133120113299. The reversal of 20133120113291 is 19231102133102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20133120113291 - 2¹⁸ = 20133119851147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20133120113299) 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, 1573631255 + ... + 1573644048.

It is an arithmetic number, because the mean of its divisors is an integer number (5034066848748).

Almost surely, 2^{20133120113291} is an apocalyptic number.

20133120113291 is a deficient number, since it is larger than the sum of its proper divisors (3147281701).

20133120113291 is an equidigital number, since it uses as much as digits as its factorization.

20133120113291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3147281700.

The product of its (nonzero) digits is 1944, while the sum is 29.

Adding to 20133120113291 its reverse (19231102133102), we get a palindrome (39364222246393).

The spelling of 20133120113291 in words is "twenty trillion, one hundred thirty-three billion, one hundred twenty million, one hundred thirteen thousand, two hundred ninety-one".