111211220122 has 8 divisors (see below), whose sum is σ = 166833708372. Its totient is φ = 55599984000.

The previous prime is 111211220117. The next prime is 111211220149. The reversal of 111211220122 is 221022112111.

It can be written as a sum of positive squares in 2 ways, for example, as 101256967681 + 9954252441 = 318209^2 + 99771^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 111211220096 and 111211220105.

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, 2788279 + ... + 2827882.

Almost surely, 2^111211220122 is an apocalyptic number.

111211220122 is a deficient number, since it is larger than the sum of its proper divisors (55622488250).

111211220122 is an equidigital number, since it uses as much as digits as its factorization.

111211220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5626064.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111211220122 its reverse (221022112111), we get a palindrome (332233332233).

The spelling of 111211220122 in words is "one hundred eleven billion, two hundred eleven million, two hundred twenty thousand, one hundred twenty-two".