111220001011 has 24 divisors (see below), whose sum is σ = 130043365920. Its totient is φ = 94842720000.

The previous prime is 111220001003. The next prime is 111220001023. The reversal of 111220001011 is 110100022111.

It is not a de Polignac number, because 111220001011 - 2³ = 111220001003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111220001041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7636186 + ... + 7650736.

It is an arithmetic number, because the mean of its divisors is an integer number (5418473580).

Almost surely, 2^111220001011 is an apocalyptic number.

111220001011 is a deficient number, since it is larger than the sum of its proper divisors (18823364909).

111220001011 is a wasteful number, since it uses less digits than its factorization.

111220001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15355 (or 15348 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111220001011 its reverse (110100022111), we get a palindrome (221320023122).

The spelling of 111220001011 in words is "one hundred eleven billion, two hundred twenty million, one thousand, eleven".