212112011012111 has 64 divisors (see below), whose sum is σ = 259731748869120. Its totient is φ = 169197525319680.

The previous prime is 212112011012087. The next prime is 212112011012131. The reversal of 212112011012111 is 111210110211212.

It is a cyclic number.

It is not a de Polignac number, because 212112011012111 - 2²² = 212112006817807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212112011012111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112011012131) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 842467835 + ... + 842719571.

It is an arithmetic number, because the mean of its divisors is an integer number (4058308576080).

Almost surely, 2^{212112011012111} is an apocalyptic number.

212112011012111 is a deficient number, since it is larger than the sum of its proper divisors (47619737857009).

212112011012111 is a wasteful number, since it uses less digits than its factorization.

212112011012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252384.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 212112011012111 its reverse (111210110211212), we get a palindrome (323322121223323).

The spelling of 212112011012111 in words is "two hundred twelve trillion, one hundred twelve billion, eleven million, twelve thousand, one hundred eleven".