2112367561 has 8 divisors (see below), whose sum is σ = 2167921184. Its totient is φ = 2057106240.

The previous prime is 2112367531. The next prime is 2112367591. The reversal of 2112367561 is 1657632112.

It is an interprime number because it is at equal distance from previous prime (2112367531) and next prime (2112367591).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2112367561 - 2⁵ = 2112367529 is a prime.

It is the 45961-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112367531) by changing a digit.

It is a nontrivial repunit in base 45960.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58395 + ... + 87376.

It is an arithmetic number, because the mean of its divisors is an integer number (270990148).

Almost surely, 2^2112367561 is an apocalyptic number.

It is an amenable number.

2112367561 is a deficient number, since it is larger than the sum of its proper divisors (55553623).

2112367561 is a wasteful number, since it uses less digits than its factorization.

2112367561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146151.

The product of its digits is 15120, while the sum is 34.

The square root of 2112367561 is about 45960.5000081592. The cubic root of 2112367561 is about 1283.0881572596.

Adding to 2112367561 its reverse (1657632112), we get a palindrome (3769999673).

The spelling of 2112367561 in words is "two billion, one hundred twelve million, three hundred sixty-seven thousand, five hundred sixty-one".