112102021 has 4 divisors (see below), whose sum is σ = 113212044. Its totient is φ = 110992000.

The previous prime is 112102019. The next prime is 112102037. The reversal of 112102021 is 120201211.

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 84916225 + 27185796 = 9215^2 + 5214^2 .

It is a cyclic number.

It is not a de Polignac number, because 112102021 - 2¹ = 112102019 is a prime.

It is a super-2 number, since 2×112102021² = 25133726224568882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112101989 and 112102007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112102061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554860 + ... + 555061.

It is an arithmetic number, because the mean of its divisors is an integer number (28303011).

Almost surely, 2^112102021 is an apocalyptic number.

It is an amenable number.

112102021 is a deficient number, since it is larger than the sum of its proper divisors (1110023).

112102021 is a wasteful number, since it uses less digits than its factorization.

112102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110022.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 112102021 is about 10587.8241863000. The cubic root of 112102021 is about 482.1747686104.

Adding to 112102021 its reverse (120201211), we get a palindrome (232303232).

It can be divided in two parts, 11210 and 2021, that added together give a palindrome (13231).

The spelling of 112102021 in words is "one hundred twelve million, one hundred two thousand, twenty-one".