201210112120111 has 4 divisors (see below), whose sum is σ = 201210140834424. Its totient is φ = 201210083405800.

The previous prime is 201210112120051. The next prime is 201210112120189. The reversal of 201210112120111 is 111021211012102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 201210112120111 - 2²⁵ = 201210078565679 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 (201210112120411) 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, 3852156 + ... + 20426926.

It is an arithmetic number, because the mean of its divisors is an integer number (50302535208606).

Almost surely, 2^{201210112120111} is an apocalyptic number.

201210112120111 is a deficient number, since it is larger than the sum of its proper divisors (28714313).

201210112120111 is a wasteful number, since it uses less digits than its factorization.

201210112120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28714312.

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

Adding to 201210112120111 its reverse (111021211012102), we get a palindrome (312231323132213).

The spelling of 201210112120111 in words is "two hundred one trillion, two hundred ten billion, one hundred twelve million, one hundred twenty thousand, one hundred eleven".