2211211220111 has 8 divisors (see below), whose sum is σ = 2212275854880. Its totient is φ = 2210146847712.

The previous prime is 2211211220093. The next prime is 2211211220137. The reversal of 2211211220111 is 1110221121122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211211220111 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 2211211220111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211211220191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17966861 + ... + 18089513.

It is an arithmetic number, because the mean of its divisors is an integer number (276534481860).

Almost surely, 2^{2211211220111} is an apocalyptic number.

2211211220111 is a deficient number, since it is larger than the sum of its proper divisors (1064634769).

2211211220111 is a wasteful number, since it uses less digits than its factorization.

2211211220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131185.

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

Adding to 2211211220111 its reverse (1110221121122), we get a palindrome (3321432341233).

The spelling of 2211211220111 in words is "two trillion, two hundred eleven billion, two hundred eleven million, two hundred twenty thousand, one hundred eleven".