111220201102 has 4 divisors (see below), whose sum is σ = 166830301656. Its totient is φ = 55610100550.

The previous prime is 111220201061. The next prime is 111220201177. The reversal of 111220201102 is 201102022111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 201102022111 = 557 ⋅361044923.

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, 27805050274 + ... + 27805050277.

It is an arithmetic number, because the mean of its divisors is an integer number (41707575414).

Almost surely, 2^111220201102 is an apocalyptic number.

111220201102 is a deficient number, since it is larger than the sum of its proper divisors (55610100554).

111220201102 is an equidigital number, since it uses as much as digits as its factorization.

111220201102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55610100553.

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

Adding to 111220201102 its reverse (201102022111), we get a palindrome (312322223213).

The spelling of 111220201102 in words is "one hundred eleven billion, two hundred twenty million, two hundred one thousand, one hundred two".