202112111011 has 4 divisors (see below), whose sum is σ = 202467317400. Its totient is φ = 201756904624.

The previous prime is 202112110999. The next prime is 202112111057. The reversal of 202112111011 is 110111211202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110111211202 = 2 ⋅55055605601.

It is a cyclic number.

It is not a de Polignac number, because 202112111011 - 2⁵ = 202112110979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202112110982 and 202112111000.

It is not an unprimeable number, because it can be changed into a prime (202112111711) 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, 177602341 + ... + 177603478.

It is an arithmetic number, because the mean of its divisors is an integer number (50616829350).

Almost surely, 2^202112111011 is an apocalyptic number.

202112111011 is a deficient number, since it is larger than the sum of its proper divisors (355206389).

202112111011 is an equidigital number, since it uses as much as digits as its factorization.

202112111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355206388.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 202112111011 its reverse (110111211202), we get a palindrome (312223322213).

The spelling of 202112111011 in words is "two hundred two billion, one hundred twelve million, one hundred eleven thousand, eleven".