2112554443515 has 32 divisors (see below), whose sum is σ = 3459083840256. Its totient is φ = 1100369370240.

The previous prime is 2112554443511. The next prime is 2112554443603. The reversal of 2112554443515 is 5153444552112.

It is not a de Polignac number, because 2112554443515 - 2² = 2112554443511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2112554443511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5683557 + ... + 6043833.

It is an arithmetic number, because the mean of its divisors is an integer number (108096370008).

Almost surely, 2^{2112554443515} is an apocalyptic number.

2112554443515 is a deficient number, since it is larger than the sum of its proper divisors (1346529396741).

2112554443515 is a wasteful number, since it uses less digits than its factorization.

2112554443515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369419.

The product of its digits is 480000, while the sum is 42.

Adding to 2112554443515 its reverse (5153444552112), we get a palindrome (7265998995627).

The spelling of 2112554443515 in words is "two trillion, one hundred twelve billion, five hundred fifty-four million, four hundred forty-three thousand, five hundred fifteen".