112523154221 has 4 divisors (see below), whose sum is σ = 114202604352. Its totient is φ = 110843704092.

The previous prime is 112523154143. The next prime is 112523154223. The reversal of 112523154221 is 122451325211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122451325211 = 317 ⋅386281783.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112523154221 is a prime.

It is a super-2 number, since 2×112523154221² (a number of 23 digits) contains 22 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 (112523154223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839724965 + ... + 839725098.

It is an arithmetic number, because the mean of its divisors is an integer number (28550651088).

Almost surely, 2^112523154221 is an apocalyptic number.

It is an amenable number.

112523154221 is a deficient number, since it is larger than the sum of its proper divisors (1679450131).

112523154221 is an equidigital number, since it uses as much as digits as its factorization.

112523154221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679450130.

The product of its digits is 4800, while the sum is 29.

Adding to 112523154221 its reverse (122451325211), we get a palindrome (234974479432).

The spelling of 112523154221 in words is "one hundred twelve billion, five hundred twenty-three million, one hundred fifty-four thousand, two hundred twenty-one".