111020022122 has 4 divisors (see below), whose sum is σ = 166530033186. Its totient is φ = 55510011060.

The previous prime is 111020022107. The next prime is 111020022149. The reversal of 111020022122 is 221220020111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221220020111 = 31 ⋅7136129681.

It can be written as a sum of positive squares in only one way, i.e., 108491843161 + 2528178961 = 329381^2 + 50281^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111020022097 and 111020022106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27755005529 + ... + 27755005532.

Almost surely, 2^111020022122 is an apocalyptic number.

111020022122 is a deficient number, since it is larger than the sum of its proper divisors (55510011064).

111020022122 is an equidigital number, since it uses as much as digits as its factorization.

111020022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55510011063.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 111020022122 its reverse (221220020111), we get a palindrome (332240042233).

The spelling of 111020022122 in words is "one hundred eleven billion, twenty million, twenty-two thousand, one hundred twenty-two".