20113213311291 has 16 divisors (see below), whose sum is σ = 26958785914368. Its totient is φ = 13338408367200.

The previous prime is 20113213311259. The next prime is 20113213311299. The reversal of 20113213311291 is 19211331231102.

It is not a de Polignac number, because 20113213311291 - 2⁵ = 20113213311259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20113213311299) 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, 22508355 + ... + 23384876.

It is an arithmetic number, because the mean of its divisors is an integer number (1684924119648).

Almost surely, 2^{20113213311291} is an apocalyptic number.

20113213311291 is a deficient number, since it is larger than the sum of its proper divisors (6845572603077).

20113213311291 is a wasteful number, since it uses less digits than its factorization.

20113213311291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45894002.

The product of its (nonzero) digits is 1944, while the sum is 30.

Adding to 20113213311291 its reverse (19211331231102), we get a palindrome (39324544542393).

The spelling of 20113213311291 in words is "twenty trillion, one hundred thirteen billion, two hundred thirteen million, three hundred eleven thousand, two hundred ninety-one".