111121119973 has 4 divisors (see below), whose sum is σ = 117657656460. Its totient is φ = 104584583488.

The previous prime is 111121119947. The next prime is 111121120001. The reversal of 111121119973 is 379911121111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 65708657569 + 45412462404 = 256337^2 + 213102^2 .

It is a cyclic number.

It is not a de Polignac number, because 111121119973 - 2¹³ = 111121111781 is a prime.

It is a super-3 number, since 3×111121119973³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121119673) 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, 3268268218 + ... + 3268268251.

It is an arithmetic number, because the mean of its divisors is an integer number (29414414115).

Almost surely, 2^111121119973 is an apocalyptic number.

It is an amenable number.

111121119973 is a deficient number, since it is larger than the sum of its proper divisors (6536536487).

111121119973 is an equidigital number, since it uses as much as digits as its factorization.

111121119973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6536536486.

The product of its digits is 3402, while the sum is 37.

The spelling of 111121119973 in words is "one hundred eleven billion, one hundred twenty-one million, one hundred nineteen thousand, nine hundred seventy-three".