20111133133 has 16 divisors (see below), whose sum is σ = 24947077120. Its totient is φ = 15786804096.

The previous prime is 20111133113. The next prime is 20111133137. The reversal of 20111133133 is 33133111102.

It is not a de Polignac number, because 20111133133 - 2⁵ = 20111133101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20111133133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111133137) 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, 858528 + ... + 881641.

It is an arithmetic number, because the mean of its divisors is an integer number (1559192320).

Almost surely, 2^20111133133 is an apocalyptic number.

It is an amenable number.

20111133133 is a deficient number, since it is larger than the sum of its proper divisors (4835943987).

20111133133 is a wasteful number, since it uses less digits than its factorization.

20111133133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740316.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 20111133133 its reverse (33133111102), we get a palindrome (53244244235).

The spelling of 20111133133 in words is "twenty billion, one hundred eleven million, one hundred thirty-three thousand, one hundred thirty-three".