212012110222111 has 4 divisors (see below), whose sum is σ = 212327135646592. Its totient is φ = 211697084797632.

The previous prime is 212012110222103. The next prime is 212012110222153. The reversal of 212012110222111 is 111222011210212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212012110222111 - 2³ = 212012110222103 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 (212012110222811) 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, 157512711231 + ... + 157512712576.

It is an arithmetic number, because the mean of its divisors is an integer number (53081783911648).

Almost surely, 2^{212012110222111} is an apocalyptic number.

212012110222111 is a deficient number, since it is larger than the sum of its proper divisors (315025424481).

212012110222111 is an equidigital number, since it uses as much as digits as its factorization.

212012110222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315025424480.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212012110222111 its reverse (111222011210212), we get a palindrome (323234121432323).

The spelling of 212012110222111 in words is "two hundred twelve trillion, twelve billion, one hundred ten million, two hundred twenty-two thousand, one hundred eleven".