11156281222 has 4 divisors (see below), whose sum is σ = 16734421836. Its totient is φ = 5578140610.

The previous prime is 11156281219. The next prime is 11156281231. The reversal of 11156281222 is 22218265111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22218265111 = 7 ⋅3174037873.

It is a super-2 number, since 2×11156281222² (a number of 21 digits) contains 22 as substring.

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, 2789070304 + ... + 2789070307.

It is an arithmetic number, because the mean of its divisors is an integer number (4183605459).

Almost surely, 2^11156281222 is an apocalyptic number.

11156281222 is a deficient number, since it is larger than the sum of its proper divisors (5578140614).

11156281222 is an equidigital number, since it uses as much as digits as its factorization.

11156281222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5578140613.

The product of its digits is 3840, while the sum is 31.

The spelling of 11156281222 in words is "eleven billion, one hundred fifty-six million, two hundred eighty-one thousand, two hundred twenty-two".