111121000220122 has 4 divisors (see below), whose sum is σ = 166681500330186. Its totient is φ = 55560500110060.

The previous prime is 111121000220099. The next prime is 111121000220137. The reversal of 111121000220122 is 221022000121111.

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., 68655823946161 + 42465176273961 = 8285881^2 + 6516531^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111121000220096 and 111121000220105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27780250055029 + ... + 27780250055032.

Almost surely, 2^{111121000220122} is an apocalyptic number.

111121000220122 is a deficient number, since it is larger than the sum of its proper divisors (55560500110064).

111121000220122 is an equidigital number, since it uses as much as digits as its factorization.

111121000220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55560500110063.

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

Adding to 111121000220122 its reverse (221022000121111), we get a palindrome (332143000341233).

The spelling of 111121000220122 in words is "one hundred eleven trillion, one hundred twenty-one billion, two hundred twenty thousand, one hundred twenty-two".