111020200011 has 24 divisors (see below), whose sum is σ = 189591149280. Its totient is φ = 61252523136.

The previous prime is 111020199959. The next prime is 111020200061. The reversal of 111020200011 is 110002020111.

It is a happy number.

It is not a de Polignac number, because 111020200011 - 2¹⁸ = 111019937867 is a prime.

It is a super-3 number, since 3×111020200011³ (a number of 34 digits) contains 333 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 111020199966 and 111020200002.

It is not an unprimeable number, because it can be changed into a prime (111020200061) 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, 30381370 + ... + 30385023.

It is an arithmetic number, because the mean of its divisors is an integer number (7899631220).

Almost surely, 2^111020200011 is an apocalyptic number.

111020200011 is a deficient number, since it is larger than the sum of its proper divisors (78570949269).

111020200011 is a wasteful number, since it uses less digits than its factorization.

111020200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60766435 (or 60766432 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 111020200011 its reverse (110002020111), we get a palindrome (221022220122).

The spelling of 111020200011 in words is "one hundred eleven billion, twenty million, two hundred thousand, eleven".