11221122122211 has 32 divisors (see below), whose sum is σ = 15201616872960. Its totient is φ = 7361678398464.

The previous prime is 11221122122167. The next prime is 11221122122237. The reversal of 11221122122211 is 11222122112211.

It is not a de Polignac number, because 11221122122211 - 2¹⁹ = 11221121597923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11221122122291) 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, 37622970 + ... + 37920048.

It is an arithmetic number, because the mean of its divisors is an integer number (475050527280).

Almost surely, 2^{11221122122211} is an apocalyptic number.

11221122122211 is a deficient number, since it is larger than the sum of its proper divisors (3980494750749).

11221122122211 is a wasteful number, since it uses less digits than its factorization.

11221122122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297915.

The product of its digits is 128, while the sum is 21.

Adding to 11221122122211 its reverse (11222122112211), we get a palindrome (22443244234422).

The spelling of 11221122122211 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred eleven".