111220003166 has 4 divisors (see below), whose sum is σ = 166830004752. Its totient is φ = 55610001582.

The previous prime is 111220003129. The next prime is 111220003183. The reversal of 111220003166 is 661300022111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661300022111 = 199 ⋅3323115689.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27805000790 + ... + 27805000793.

It is an arithmetic number, because the mean of its divisors is an integer number (41707501188).

Almost surely, 2^111220003166 is an apocalyptic number.

111220003166 is a deficient number, since it is larger than the sum of its proper divisors (55610001586).

111220003166 is an equidigital number, since it uses as much as digits as its factorization.

111220003166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55610001585.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 111220003166 its reverse (661300022111), we get a palindrome (772520025277).

The spelling of 111220003166 in words is "one hundred eleven billion, two hundred twenty million, three thousand, one hundred sixty-six".