20211113133 has 12 divisors (see below), whose sum is σ = 29253782688. Its totient is φ = 13446405000.

The previous prime is 20211113129. The next prime is 20211113147. The reversal of 20211113133 is 33131111202.

It is not a de Polignac number, because 20211113133 - 2² = 20211113129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211113123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2301243 + ... + 2310008.

It is an arithmetic number, because the mean of its divisors is an integer number (2437815224).

Almost surely, 2^20211113133 is an apocalyptic number.

It is an amenable number.

20211113133 is a deficient number, since it is larger than the sum of its proper divisors (9042669555).

20211113133 is a wasteful number, since it uses less digits than its factorization.

20211113133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4611744 (or 4611741 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 20211113133 its reverse (33131111202), we get a palindrome (53342224335).

The spelling of 20211113133 in words is "twenty billion, two hundred eleven million, one hundred thirteen thousand, one hundred thirty-three".