212112121020111 has 24 divisors (see below), whose sum is σ = 341329849922880. Its totient is φ = 126029483044416.

The previous prime is 212112121020073. The next prime is 212112121020131. The reversal of 212112121020111 is 111020121211212.

It is a happy number.

212112121020111 is a `hidden beast` number, since 2 + 121 + 121 + 210 + 201 + 11 = 666.

212112121020111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212112121020111 - 2³⁹ = 211562365206223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112121020131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31257308871 + ... + 31257315656.

It is an arithmetic number, because the mean of its divisors is an integer number (14222077080120).

Almost surely, 2^{212112121020111} is an apocalyptic number.

212112121020111 is a deficient number, since it is larger than the sum of its proper divisors (129217728902769).

212112121020111 is a wasteful number, since it uses less digits than its factorization.

212112121020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62514624575 (or 62514624572 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 212112121020111 its reverse (111020121211212), we get a palindrome (323132242231323).

The spelling of 212112121020111 in words is "two hundred twelve trillion, one hundred twelve billion, one hundred twenty-one million, twenty thousand, one hundred eleven".