11011121222 has 4 divisors (see below), whose sum is σ = 16516681836. Its totient is φ = 5505560610.

The previous prime is 11011121201. The next prime is 11011121237. The reversal of 11011121222 is 22212111011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22212111011 = 23 ⋅965743957.

It is a junction number, because it is equal to n+sod(n) for n = 11011121197 and 11011121206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2752780304 + ... + 2752780307.

It is an arithmetic number, because the mean of its divisors is an integer number (4129170459).

Almost surely, 2^11011121222 is an apocalyptic number.

11011121222 is a deficient number, since it is larger than the sum of its proper divisors (5505560614).

11011121222 is an equidigital number, since it uses as much as digits as its factorization.

11011121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505560613.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11011121222 its reverse (22212111011), we get a palindrome (33223232233).

The spelling of 11011121222 in words is "eleven billion, eleven million, one hundred twenty-one thousand, two hundred twenty-two".