11212212021101 has 48 divisors (see below), whose sum is σ = 13955191747200. Its totient is φ = 8820290029824.

The previous prime is 11212212021091. The next prime is 11212212021139. The reversal of 11212212021101 is 10112021221211.

It is not a de Polignac number, because 11212212021101 - 2⁶ = 11212212021037 is a prime.

It is a super-2 number, since 2×11212212021101² (a number of 27 digits) contains 22 as substring.

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 11212212021101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212212021191) 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 47 ways as a sum of consecutive naturals, for example, 367972295 + ... + 368002763.

It is an arithmetic number, because the mean of its divisors is an integer number (290733161400).

Almost surely, 2^{11212212021101} is an apocalyptic number.

It is an amenable number.

11212212021101 is a deficient number, since it is larger than the sum of its proper divisors (2742979726099).

11212212021101 is a wasteful number, since it uses less digits than its factorization.

11212212021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32278 (or 32265 counting only the distinct ones).

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

Adding to 11212212021101 its reverse (10112021221211), we get a palindrome (21324233242312).

The spelling of 11212212021101 in words is "eleven trillion, two hundred twelve billion, two hundred twelve million, twenty-one thousand, one hundred one".