111253544332121 has 4 divisors (see below), whose sum is σ = 111265948571700. Its totient is φ = 111241140092544.

The previous prime is 111253544332109. The next prime is 111253544332153. The reversal of 111253544332121 is 121233445352111.

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 70064617352521 + 41188926979600 = 8370461^2 + 6417860^2 .

It is a cyclic number.

It is not a de Polignac number, because 111253544332121 - 2¹⁸ = 111253544069977 is a prime.

It is a super-2 number, since 2×111253544332121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111253544332321) 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, 6202106336 + ... + 6202124273.

It is an arithmetic number, because the mean of its divisors is an integer number (27816487142925).

Almost surely, 2^{111253544332121} is an apocalyptic number.

It is an amenable number.

111253544332121 is a deficient number, since it is larger than the sum of its proper divisors (12404239579).

111253544332121 is an equidigital number, since it uses as much as digits as its factorization.

111253544332121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12404239578.

The product of its digits is 86400, while the sum is 38.

Adding to 111253544332121 its reverse (121233445352111), we get a palindrome (232486989684232).

The spelling of 111253544332121 in words is "one hundred eleven trillion, two hundred fifty-three billion, five hundred forty-four million, three hundred thirty-two thousand, one hundred twenty-one".