111220201101 has 4 divisors (see below), whose sum is σ = 148293601472. Its totient is φ = 74146800732.

The previous prime is 111220201061. The next prime is 111220201177. The reversal of 111220201101 is 101102022111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 111220201101 - 2¹⁵ = 111220168333 is a prime.

It is a super-2 number, since 2×111220201101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220201801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18536700181 + ... + 18536700186.

It is an arithmetic number, because the mean of its divisors is an integer number (37073400368).

Almost surely, 2^111220201101 is an apocalyptic number.

It is an amenable number.

111220201101 is a deficient number, since it is larger than the sum of its proper divisors (37073400371).

111220201101 is an equidigital number, since it uses as much as digits as its factorization.

111220201101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37073400370.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111220201101 its reverse (101102022111), we get a palindrome (212322223212).

The spelling of 111220201101 in words is "one hundred eleven billion, two hundred twenty million, two hundred one thousand, one hundred one".