2211100231211 has 32 divisors (see below), whose sum is σ = 2468344544640. Its totient is φ = 1970762766336.

The previous prime is 2211100231181. The next prime is 2211100231213. The reversal of 2211100231211 is 1121320011122.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211100231211 is a prime.

It is a super-2 number, since 2×2211100231211² (a number of 25 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2211100231211.

It is not an unprimeable number, because it can be changed into a prime (2211100231213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100507265 + ... + 100529261.

It is an arithmetic number, because the mean of its divisors is an integer number (77135767020).

Almost surely, 2^{2211100231211} is an apocalyptic number.

2211100231211 is a deficient number, since it is larger than the sum of its proper divisors (257244313429).

2211100231211 is a wasteful number, since it uses less digits than its factorization.

2211100231211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25943.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 2211100231211 its reverse (1121320011122), we get a palindrome (3332420242333).

The spelling of 2211100231211 in words is "two trillion, two hundred eleven billion, one hundred million, two hundred thirty-one thousand, two hundred eleven".