2111221332211 has 4 divisors (see below), whose sum is σ = 2156140935072. Its totient is φ = 2066301729352.

The previous prime is 2111221332203. The next prime is 2111221332223. The reversal of 2111221332211 is 1122331221112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2111221332211 - 2³ = 2111221332203 is a prime.

It is a super-2 number, since 2×2111221332211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111221132211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22459801360 + ... + 22459801453.

It is an arithmetic number, because the mean of its divisors is an integer number (539035233768).

Almost surely, 2^{2111221332211} is an apocalyptic number.

2111221332211 is a deficient number, since it is larger than the sum of its proper divisors (44919602861).

2111221332211 is an equidigital number, since it uses as much as digits as its factorization.

2111221332211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44919602860.

The product of its digits is 288, while the sum is 22.

Adding to 2111221332211 its reverse (1122331221112), we get a palindrome (3233552553323).

The spelling of 2111221332211 in words is "two trillion, one hundred eleven billion, two hundred twenty-one million, three hundred thirty-two thousand, two hundred eleven".