202111133023 has 4 divisors (see below), whose sum is σ = 204382044720. Its totient is φ = 199840221328.

The previous prime is 202111132987. The next prime is 202111133089. The reversal of 202111133023 is 320331111202.

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 202111133023 - 2¹⁷ = 202111001951 is a prime.

It is a super-2 number, since 2×202111133023² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202111533023) 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, 1135455715 + ... + 1135455892.

It is an arithmetic number, because the mean of its divisors is an integer number (51095511180).

Almost surely, 2^202111133023 is an apocalyptic number.

202111133023 is a deficient number, since it is larger than the sum of its proper divisors (2270911697).

202111133023 is an equidigital number, since it uses as much as digits as its factorization.

202111133023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2270911696.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 202111133023 its reverse (320331111202), we get a palindrome (522442244225).

The spelling of 202111133023 in words is "two hundred two billion, one hundred eleven million, one hundred thirty-three thousand, twenty-three".