2201221122011 has 4 divisors (see below), whose sum is σ = 2201443455024. Its totient is φ = 2200998789000.

The previous prime is 2201221122007. The next prime is 2201221122013. The reversal of 2201221122011 is 1102211221022.

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 2201221122011 - 2² = 2201221122007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2201221122013) 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, 111151655 + ... + 111171456.

It is an arithmetic number, because the mean of its divisors is an integer number (550360863756).

Almost surely, 2^{2201221122011} is an apocalyptic number.

2201221122011 is a deficient number, since it is larger than the sum of its proper divisors (222333013).

2201221122011 is an equidigital number, since it uses as much as digits as its factorization.

2201221122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222333012.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2201221122011 its reverse (1102211221022), we get a palindrome (3303432343033).

It can be divided in two parts, 2201221 and 122011, that added together give a palindrome (2323232).

The spelling of 2201221122011 in words is "two trillion, two hundred one billion, two hundred twenty-one million, one hundred twenty-two thousand, eleven".