10212112111211 has 4 divisors (see below), whose sum is σ = 10214172255792. Its totient is φ = 10210051966632.

The previous prime is 10212112111169. The next prime is 10212112111213. The reversal of 10212112111211 is 11211121121201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10212112111211 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 10212112111211.

It is not an unprimeable number, because it can be changed into a prime (10212112111213) 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, 1030064855 + ... + 1030074768.

It is an arithmetic number, because the mean of its divisors is an integer number (2553543063948).

Almost surely, 2^{10212112111211} is an apocalyptic number.

10212112111211 is a deficient number, since it is larger than the sum of its proper divisors (2060144581).

10212112111211 is an equidigital number, since it uses as much as digits as its factorization.

10212112111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060144580.

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

Adding to 10212112111211 its reverse (11211121121201), we get a palindrome (21423233232412).

The spelling of 10212112111211 in words is "ten trillion, two hundred twelve billion, one hundred twelve million, one hundred eleven thousand, two hundred eleven".