212011110211121 has 16 divisors (see below), whose sum is σ = 233205713121024. Its totient is φ = 191515522116864.

The previous prime is 212011110211093. The next prime is 212011110211163. The reversal of 212011110211121 is 121112011110212.

212011110211121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-212011110211121 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 212011110211121.

It is not an unprimeable number, because it can be changed into a prime (212011110211421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15916451 + ... + 26026056.

It is an arithmetic number, because the mean of its divisors is an integer number (14575357070064).

Almost surely, 2^{212011110211121} is an apocalyptic number.

It is an amenable number.

212011110211121 is a deficient number, since it is larger than the sum of its proper divisors (21194602909903).

212011110211121 is a wasteful number, since it uses less digits than its factorization.

212011110211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41950840.

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

Adding to 212011110211121 its reverse (121112011110212), we get a palindrome (333123121321333).

The spelling of 212011110211121 in words is "two hundred twelve trillion, eleven billion, one hundred ten million, two hundred eleven thousand, one hundred twenty-one".