11112121012222 has 8 divisors (see below), whose sum is σ = 16690084518672. Its totient is φ = 5548759506000.

The previous prime is 11112121012199. The next prime is 11112121012249. The reversal of 11112121012222 is 22221012121111.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11112121012222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3650498154 + ... + 3650501197.

It is an arithmetic number, because the mean of its divisors is an integer number (2086260564834).

Almost surely, 2^{11112121012222} is an apocalyptic number.

11112121012222 is a deficient number, since it is larger than the sum of its proper divisors (5577963506450).

11112121012222 is an equidigital number, since it uses as much as digits as its factorization.

11112121012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7301000114.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11112121012222 its reverse (22221012121111), we get a palindrome (33333133133333).

The spelling of 11112121012222 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-one million, twelve thousand, two hundred twenty-two".