2112001561550 has 96 divisors (see below), whose sum is σ = 4146289620480. Its totient is φ = 798796944000.

The previous prime is 2112001561547. The next prime is 2112001561597. The reversal of 2112001561550 is 551651002112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 74670311 + ... + 74698589.

It is an arithmetic number, because the mean of its divisors is an integer number (43190516880).

Almost surely, 2^{2112001561550} is an apocalyptic number.

2112001561550 is a deficient number, since it is larger than the sum of its proper divisors (2034288058930).

2112001561550 is a wasteful number, since it uses less digits than its factorization.

2112001561550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29058 (or 29053 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 29.

Adding to 2112001561550 its reverse (551651002112), we get a palindrome (2663652563662).

The spelling of 2112001561550 in words is "two trillion, one hundred twelve billion, one million, five hundred sixty-one thousand, five hundred fifty".