2551052121121 has 8 divisors (see below), whose sum is σ = 2915498594240. Its totient is φ = 2186608261968.

The previous prime is 2551052121097. The next prime is 2551052121139. The reversal of 2551052121121 is 1211212501552.

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 2551052121121 - 2⁹ = 2551052120609 is a prime.

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 2551052121121.

It is not an unprimeable number, because it can be changed into a prime (2551052121161) by changing a digit.

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, 2371015 + ... + 3274723.

It is an arithmetic number, because the mean of its divisors is an integer number (364437324280).

Almost surely, 2^{2551052121121} is an apocalyptic number.

It is an amenable number.

2551052121121 is a deficient number, since it is larger than the sum of its proper divisors (364446473119).

2551052121121 is an equidigital number, since it uses as much as digits as its factorization.

2551052121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306983.

The product of its (nonzero) digits is 2000, while the sum is 28.

Adding to 2551052121121 its reverse (1211212501552), we get a palindrome (3762264622673).

The spelling of 2551052121121 in words is "two trillion, five hundred fifty-one billion, fifty-two million, one hundred twenty-one thousand, one hundred twenty-one".