11211220122222 has 32 divisors (see below), whose sum is σ = 23735061060480. Its totient is φ = 3524296940640.

The previous prime is 11211220122199. The next prime is 11211220122229. The reversal of 11211220122222 is 22222102211211.

11211220122222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211220122229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 749205304 + ... + 749220267.

It is an arithmetic number, because the mean of its divisors is an integer number (741720658140).

Almost surely, 2^{11211220122222} is an apocalyptic number.

11211220122222 is an abundant number, since it is smaller than the sum of its proper divisors (12523840938258).

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

11211220122222 is a wasteful number, since it uses less digits than its factorization.

11211220122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498425648.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 11211220122222 its reverse (22222102211211), we get a palindrome (33433322333433).

The spelling of 11211220122222 in words is "eleven trillion, two hundred eleven billion, two hundred twenty million, one hundred twenty-two thousand, two hundred twenty-two".