2211222121211 has 8 divisors (see below), whose sum is σ = 2362773774240. Its totient is φ = 2062057108608.

The previous prime is 2211222121193. The next prime is 2211222121289. The reversal of 2211222121211 is 1121212221122.

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-2211222121211 is a prime.

It is a super-3 number, since 3×2211222121211³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211222129211) 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, 596658191 + ... + 596661896.

It is an arithmetic number, because the mean of its divisors is an integer number (295346721780).

Almost surely, 2^{2211222121211} is an apocalyptic number.

2211222121211 is a deficient number, since it is larger than the sum of its proper divisors (151551653029).

2211222121211 is a wasteful number, since it uses less digits than its factorization.

2211222121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193320213.

The product of its digits is 128, while the sum is 20.

Adding to 2211222121211 its reverse (1121212221122), we get a palindrome (3332434342333).

The spelling of 2211222121211 in words is "two trillion, two hundred eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred eleven".