111254522461 has 4 divisors (see below), whose sum is σ = 111740350300. Its totient is φ = 110768694624.

The previous prime is 111254522429. The next prime is 111254522471. The reversal of 111254522461 is 164225452111.

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 70971624025 + 40282898436 = 266405^2 + 200706^2 .

It is a cyclic number.

It is not a de Polignac number, because 111254522461 - 2⁵ = 111254522429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111254522411) 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, 242913576 + ... + 242914033.

It is an arithmetic number, because the mean of its divisors is an integer number (27935087575).

Almost surely, 2^111254522461 is an apocalyptic number.

It is an amenable number.

111254522461 is a deficient number, since it is larger than the sum of its proper divisors (485827839).

111254522461 is an equidigital number, since it uses as much as digits as its factorization.

111254522461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485827838.

The product of its digits is 19200, while the sum is 34.

Adding to 111254522461 its reverse (164225452111), we get a palindrome (275479974572).

The spelling of 111254522461 in words is "one hundred eleven billion, two hundred fifty-four million, five hundred twenty-two thousand, four hundred sixty-one".