111120020122 has 4 divisors (see below), whose sum is σ = 166680030186. Its totient is φ = 55560010060.

The previous prime is 111120020117. The next prime is 111120020131. The reversal of 111120020122 is 221020021111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221020021111 = 16433 ⋅13449767.

It can be written as a sum of positive squares in only one way, i.e., 99306286641 + 11813733481 = 315129^2 + 108691^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27780005029 + ... + 27780005032.

Almost surely, 2^111120020122 is an apocalyptic number.

111120020122 is a deficient number, since it is larger than the sum of its proper divisors (55560010064).

111120020122 is an equidigital number, since it uses as much as digits as its factorization.

111120020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55560010063.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 111120020122 its reverse (221020021111), we get a palindrome (332140041233).

The spelling of 111120020122 in words is "one hundred eleven billion, one hundred twenty million, twenty thousand, one hundred twenty-two".