2112151110505 has 8 divisors (see below), whose sum is σ = 2534647299912. Its totient is φ = 1689676910208.

The previous prime is 2112151110497. The next prime is 2112151110523. The reversal of 2112151110505 is 5050111512112.

It can be written as a sum of positive squares in 4 ways, for example, as 51579860544 + 2060571249961 = 227112^2 + 1435469^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2112151110505 - 2³ = 2112151110497 is a prime.

It is a super-2 number, since 2×2112151110505² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2112151110505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5285212 + ... + 5670781.

It is an arithmetic number, because the mean of its divisors is an integer number (316830912489).

Almost surely, 2^{2112151110505} is an apocalyptic number.

It is an amenable number.

2112151110505 is a deficient number, since it is larger than the sum of its proper divisors (422496189407).

2112151110505 is a wasteful number, since it uses less digits than its factorization.

2112151110505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10994555.

The product of its (nonzero) digits is 500, while the sum is 25.

Adding to 2112151110505 its reverse (5050111512112), we get a palindrome (7162262622617).

The spelling of 2112151110505 in words is "two trillion, one hundred twelve billion, one hundred fifty-one million, one hundred ten thousand, five hundred five".