111201001011 has 48 divisors (see below), whose sum is σ = 170092643200. Its totient is φ = 71785703088.

The previous prime is 111201001003. The next prime is 111201001027. The reversal of 111201001011 is 110100102111.

It is not a de Polignac number, because 111201001011 - 2³ = 111201001003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111201000984 and 111201001002.

It is not an unprimeable number, because it can be changed into a prime (111201001061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6288300 + ... + 6305958.

Almost surely, 2^111201001011 is an apocalyptic number.

111201001011 is a deficient number, since it is larger than the sum of its proper divisors (58891642189).

111201001011 is an equidigital number, since it uses as much as digits as its factorization.

111201001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17853 (or 17788 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111201001011 its reverse (110100102111), we get a palindrome (221301103122).

The spelling of 111201001011 in words is "one hundred eleven billion, two hundred one million, one thousand, eleven".