112520221 has 4 divisors (see below), whose sum is σ = 122749344. Its totient is φ = 102291100.

The previous prime is 112520183. The next prime is 112520231. The reversal of 112520221 is 122025211.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112520221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112520195 and 112520204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112520231) 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, 5114545 + ... + 5114566.

It is an arithmetic number, because the mean of its divisors is an integer number (30687336).

Almost surely, 2^112520221 is an apocalyptic number.

112520221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112520221 is a deficient number, since it is larger than the sum of its proper divisors (10229123).

112520221 is a wasteful number, since it uses less digits than its factorization.

112520221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10229122.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 112520221 is about 10607.5549020498. The cubic root of 112520221 is about 482.7736137713.

Adding to 112520221 its reverse (122025211), we get a palindrome (234545432).

The spelling of 112520221 in words is "one hundred twelve million, five hundred twenty thousand, two hundred twenty-one".