111041452121 has 4 divisors (see below), whose sum is σ = 111112954932. Its totient is φ = 110969949312.

The previous prime is 111041452117. The next prime is 111041452127. The reversal of 111041452121 is 121254140111.

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 21302862025 + 89738590096 = 145955^2 + 299564^2 .

It is a cyclic number.

It is not a de Polignac number, because 111041452121 - 2² = 111041452117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111041452127) 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, 35749076 + ... + 35752181.

It is an arithmetic number, because the mean of its divisors is an integer number (27778238733).

Almost surely, 2^111041452121 is an apocalyptic number.

It is an amenable number.

111041452121 is a deficient number, since it is larger than the sum of its proper divisors (71502811).

111041452121 is an equidigital number, since it uses as much as digits as its factorization.

111041452121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71502810.

The product of its (nonzero) digits is 320, while the sum is 23.

Adding to 111041452121 its reverse (121254140111), we get a palindrome (232295592232).

The spelling of 111041452121 in words is "one hundred eleven billion, forty-one million, four hundred fifty-two thousand, one hundred twenty-one".