111020202001111 has 4 divisors (see below), whose sum is σ = 119560217539672. Its totient is φ = 102480186462552.

The previous prime is 111020202001109. The next prime is 111020202001127. The reversal of 111020202001111 is 111100202020111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111020202001111 - 2¹ = 111020202001109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 8540015538547 = 111020202001111 / (1 + 1 + 1 + 0 + 2 + 0 + 2 + 0 + 2 + 0 + 0 + 1 + 1 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 111020202001091 and 111020202001100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020202001171) 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, 4270007769261 + ... + 4270007769286.

It is an arithmetic number, because the mean of its divisors is an integer number (29890054384918).

Almost surely, 2^{111020202001111} is an apocalyptic number.

111020202001111 is a deficient number, since it is larger than the sum of its proper divisors (8540015538561).

111020202001111 is an equidigital number, since it uses as much as digits as its factorization.

111020202001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8540015538560.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111020202001111 its reverse (111100202020111), we get a palindrome (222120404021222).

The spelling of 111020202001111 in words is "one hundred eleven trillion, twenty billion, two hundred two million, one thousand, one hundred eleven".