112121120213 has 4 divisors (see below), whose sum is σ = 112125888108. Its totient is φ = 112116352320.

The previous prime is 112121120161. The next prime is 112121120219. The reversal of 112121120213 is 312021121211.

It is a happy number.

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 42666207364 + 69454912849 = 206558^2 + 263543^2 .

It is a cyclic number.

It is not a de Polignac number, because 112121120213 - 2¹² = 112121116117 is a prime.

It is a super-2 number, since 2×112121120213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 112121120191 and 112121120200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121120219) 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, 2348498 + ... + 2395763.

It is an arithmetic number, because the mean of its divisors is an integer number (28031472027).

Almost surely, 2^112121120213 is an apocalyptic number.

It is an amenable number.

112121120213 is a deficient number, since it is larger than the sum of its proper divisors (4767895).

112121120213 is an equidigital number, since it uses as much as digits as its factorization.

112121120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4767894.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 112121120213 its reverse (312021121211), we get a palindrome (424142241424).

The spelling of 112121120213 in words is "one hundred twelve billion, one hundred twenty-one million, one hundred twenty thousand, two hundred thirteen".