22111121222222 has 4 divisors (see below), whose sum is σ = 33166681833336. Its totient is φ = 11055560611110.

The previous prime is 22111121222189. The next prime is 22111121222249. The reversal of 22111121222222 is 22222212111122.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×22111121222222² (a number of 27 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5527780305554 + ... + 5527780305557.

It is an arithmetic number, because the mean of its divisors is an integer number (8291670458334).

Almost surely, 2^{22111121222222} is an apocalyptic number.

22111121222222 is a deficient number, since it is larger than the sum of its proper divisors (11055560611114).

22111121222222 is a wasteful number, since it uses less digits than its factorization.

22111121222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11055560611113.

The product of its digits is 512, while the sum is 23.

Adding to 22111121222222 its reverse (22222212111122), we get a palindrome (44333333333344).

The spelling of 22111121222222 in words is "twenty-two trillion, one hundred eleven billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-two".