20202111133 has 4 divisors (see below), whose sum is σ = 21265380160. Its totient is φ = 19138842108.

The previous prime is 20202111079. The next prime is 20202111151. The reversal of 20202111133 is 33111120202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20202111133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202111173) 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, 531634485 + ... + 531634522.

It is an arithmetic number, because the mean of its divisors is an integer number (5316345040).

Almost surely, 2^20202111133 is an apocalyptic number.

It is an amenable number.

20202111133 is a deficient number, since it is larger than the sum of its proper divisors (1063269027).

20202111133 is a wasteful number, since it uses less digits than its factorization.

20202111133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063269026.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20202111133 its reverse (33111120202), we get a palindrome (53313231335).

The spelling of 20202111133 in words is "twenty billion, two hundred two million, one hundred eleven thousand, one hundred thirty-three".