112121432505 has 24 divisors (see below), whose sum is σ = 194352867072. Its totient is φ = 59795312544.

The previous prime is 112121432461. The next prime is 112121432509. The reversal of 112121432505 is 505234121211.

It is a happy number.

112121432505 is a `hidden beast` number, since 1 + 1 + 2 + 12 + 143 + 2 + 505 = 666.

It is not a de Polignac number, because 112121432505 - 2⁸ = 112121432249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (112121432509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1236322 + ... + 1323908.

It is an arithmetic number, because the mean of its divisors is an integer number (8098036128).

Almost surely, 2^112121432505 is an apocalyptic number.

112121432505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

112121432505 is a deficient number, since it is larger than the sum of its proper divisors (82231434567).

112121432505 is a wasteful number, since it uses less digits than its factorization.

112121432505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116045 (or 116042 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 112121432505 its reverse (505234121211), we get a palindrome (617355553716).

The spelling of 112121432505 in words is "one hundred twelve billion, one hundred twenty-one million, four hundred thirty-two thousand, five hundred five".