11222122212222 has 16 divisors (see below), whose sum is σ = 22448060894352. Its totient is φ = 3740071325760.

The previous prime is 11222122212139. The next prime is 11222122212227. The reversal of 11222122212222 is 22221222122211.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 11222122212192 and 11222122212201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222122212227) 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, 158981353 + ... + 159051924.

It is an arithmetic number, because the mean of its divisors is an integer number (1403003805897).

Almost surely, 2^{11222122212222} is an apocalyptic number.

11222122212222 is an abundant number, since it is smaller than the sum of its proper divisors (11225938682130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11222122212222 is a wasteful number, since it uses less digits than its factorization.

11222122212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318039163.

The product of its digits is 1024, while the sum is 24.

Adding to 11222122212222 its reverse (22221222122211), we get a palindrome (33443344334433).

The spelling of 11222122212222 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twenty-two".