11222221112122 has 4 divisors (see below), whose sum is σ = 16833331668186. Its totient is φ = 5611110556060.

The previous prime is 11222221112107. The next prime is 11222221112143. The reversal of 11222221112122 is 22121112222211.

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

It can be written as a sum of positive squares in only one way, i.e., 7132366081201 + 4089855030921 = 2670649^2 + 2022339^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 11222221112093 and 11222221112102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2805555278029 + ... + 2805555278032.

Almost surely, 2^{11222221112122} is an apocalyptic number.

11222221112122 is a deficient number, since it is larger than the sum of its proper divisors (5611110556064).

11222221112122 is an equidigital number, since it uses as much as digits as its factorization.

11222221112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611110556063.

The product of its digits is 256, while the sum is 22.

Adding to 11222221112122 its reverse (22121112222211), we get a palindrome (33343333334333).

The spelling of 11222221112122 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred twelve thousand, one hundred twenty-two".