112135021 has 4 divisors (see below), whose sum is σ = 112160412. Its totient is φ = 112109632.

The previous prime is 112134991. The next prime is 112135027. The reversal of 112135021 is 120531211.

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 14402025 + 97732996 = 3795^2 + 9886^2 .

It is a cyclic number.

It is not a de Polignac number, because 112135021 - 2⁹ = 112134509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112134986 and 112135004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112135027) 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, 4156 + ... + 15541.

It is an arithmetic number, because the mean of its divisors is an integer number (28040103).

Almost surely, 2^112135021 is an apocalyptic number.

It is an amenable number.

112135021 is a deficient number, since it is larger than the sum of its proper divisors (25391).

112135021 is an equidigital number, since it uses as much as digits as its factorization.

112135021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25390.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 112135021 is about 10589.3824654698. The cubic root of 112135021 is about 482.2220773212. Note that the first 3 decimals are identical.

Adding to 112135021 its reverse (120531211), we get a palindrome (232666232).

It can be divided in two parts, 11 and 2135021, that multiplied together give a triangular number (23485231 = T₆₈₅₃).

The spelling of 112135021 in words is "one hundred twelve million, one hundred thirty-five thousand, twenty-one".