212012110022111 has 4 divisors (see below), whose sum is σ = 242299554310992. Its totient is φ = 181724665733232.

The previous prime is 212012110022101. The next prime is 212012110022137. The reversal of 212012110022111 is 111220011210212.

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 212012110022111 - 2¹⁴ = 212012110005727 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 212012110022111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012110022101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15143722144430 + ... + 15143722144443.

It is an arithmetic number, because the mean of its divisors is an integer number (60574888577748).

Almost surely, 2^{212012110022111} is an apocalyptic number.

212012110022111 is a deficient number, since it is larger than the sum of its proper divisors (30287444288881).

212012110022111 is an equidigital number, since it uses as much as digits as its factorization.

212012110022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30287444288880.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212012110022111 its reverse (111220011210212), we get a palindrome (323232121232323).

The spelling of 212012110022111 in words is "two hundred twelve trillion, twelve billion, one hundred ten million, twenty-two thousand, one hundred eleven".