11212012201211 has 12 divisors (see below), whose sum is σ = 12410137833912. Its totient is φ = 10093678495296.

The previous prime is 11212012201199. The next prime is 11212012201253. The reversal of 11212012201211 is 11210221021211.

It is a de Polignac number, because none of the positive numbers 2^k-11212012201211 is a prime.

It is a super-3 number, since 3×11212012201211³ (a number of 40 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 11212012201211.

It is not an unprimeable number, because it can be changed into a prime (11212012201261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 623365421 + ... + 623383406.

It is an arithmetic number, because the mean of its divisors is an integer number (1034178152826).

Almost surely, 2^{11212012201211} is an apocalyptic number.

11212012201211 is a deficient number, since it is larger than the sum of its proper divisors (1198125632701).

11212012201211 is a wasteful number, since it uses less digits than its factorization.

11212012201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246748890 (or 1246748867 counting only the distinct ones).

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

Adding to 11212012201211 its reverse (11210221021211), we get a palindrome (22422233222422).

The spelling of 11212012201211 in words is "eleven trillion, two hundred twelve billion, twelve million, two hundred one thousand, two hundred eleven".