202112110111 has 2 divisors, whose sum is σ = 202112110112. Its totient is φ = 202112110110.

The previous prime is 202112110099. The next prime is 202112110129. The reversal of 202112110111 is 111011211202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202112110111 - 2²¹ = 202110012959 is a prime.

It is a super-4 number, since 4×202112110111⁴ (a number of 46 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202112110091 and 202112110100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202112110181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101056055055 + 101056055056.

It is an arithmetic number, because the mean of its divisors is an integer number (101056055056).

Almost surely, 2^202112110111 is an apocalyptic number.

202112110111 is a deficient number, since it is larger than the sum of its proper divisors (1).

202112110111 is an equidigital number, since it uses as much as digits as its factorization.

202112110111 is an evil number, because the sum of its binary digits is even.

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

Adding to 202112110111 its reverse (111011211202), we get a palindrome (313123321313).

The spelling of 202112110111 in words is "two hundred two billion, one hundred twelve million, one hundred ten thousand, one hundred eleven".