11122221222211 has 8 divisors (see below), whose sum is σ = 12142005120000. Its totient is φ = 10103882804040.

The previous prime is 11122221222191. The next prime is 11122221222241. The reversal of 11122221222211 is 11222212222111.

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

It is a cyclic number.

It is not a de Polignac number, because 11122221222211 - 2²³ = 11122212833603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11122221222241) 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, 361353811 + ... + 361384588.

It is an arithmetic number, because the mean of its divisors is an integer number (1517750640000).

Almost surely, 2^{11122221222211} is an apocalyptic number.

11122221222211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11122221222211 is a deficient number, since it is larger than the sum of its proper divisors (1019783897789).

11122221222211 is a wasteful number, since it uses less digits than its factorization.

11122221222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722739809.

The product of its digits is 256, while the sum is 22.

Adding to 11122221222211 its reverse (11222212222111), we get a palindrome (22344433444322).

The spelling of 11122221222211 in words is "eleven trillion, one hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred eleven".