11111222022222 has 32 divisors (see below), whose sum is σ = 25399104268032. Its totient is φ = 3174381693504.

The previous prime is 11111222022221. The next prime is 11111222022289. The reversal of 11111222022222 is 22222022211111.

It is a super-2 number, since 2×11111222022222² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111222022221) 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, 10015503 + ... + 11069450.

It is an arithmetic number, because the mean of its divisors is an integer number (793722008376).

Almost surely, 2^{11111222022222} is an apocalyptic number.

11111222022222 is an abundant number, since it is smaller than the sum of its proper divisors (14287882245810).

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

11111222022222 is a wasteful number, since it uses less digits than its factorization.

11111222022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21097512.

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

Adding to 11111222022222 its reverse (22222022211111), we get a palindrome (33333244233333).

The spelling of 11111222022222 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-two million, twenty-two thousand, two hundred twenty-two".