11211202122111 has 12 divisors (see below), whose sum is σ = 16422042546000. Its totient is φ = 7368865244160.

The previous prime is 11211202122097. The next prime is 11211202122173. The reversal of 11211202122111 is 11122120211211.

It is a happy number.

11211202122111 is a `hidden beast` number, since 1 + 121 + 120 + 212 + 211 + 1 = 666.

It is not a de Polignac number, because 11211202122111 - 2⁵ = 11211202122079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211202122181) 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, 8772457986 + ... + 8772459263.

It is an arithmetic number, because the mean of its divisors is an integer number (1368503545500).

Almost surely, 2^{11211202122111} is an apocalyptic number.

11211202122111 is a deficient number, since it is larger than the sum of its proper divisors (5210840423889).

11211202122111 is a wasteful number, since it uses less digits than its factorization.

11211202122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17544917326 (or 17544917323 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11211202122111 its reverse (11122120211211), we get a palindrome (22333322333322).

The spelling of 11211202122111 in words is "eleven trillion, two hundred eleven billion, two hundred two million, one hundred twenty-two thousand, one hundred eleven".