2051251122213 has 12 divisors (see below), whose sum is σ = 2963018231628. Its totient is φ = 1367454620160.

The previous prime is 2051251122181. The next prime is 2051251122227. The reversal of 2051251122213 is 3122211521502.

2051251122213 is a `hidden beast` number, since 2 + 0 + 512 + 5 + 1 + 122 + 21 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 844454399364 + 1206796722849 = 918942^2 + 1098543^2 .

It is not a de Polignac number, because 2051251122213 - 2⁵ = 2051251122181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051251122233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3561270 + ... + 4096967.

It is an arithmetic number, because the mean of its divisors is an integer number (246918185969).

Almost surely, 2^{2051251122213} is an apocalyptic number.

It is an amenable number.

2051251122213 is a deficient number, since it is larger than the sum of its proper divisors (911767109415).

2051251122213 is a wasteful number, since it uses less digits than its factorization.

2051251122213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7688004 (or 7688001 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 2051251122213 its reverse (3122211521502), we get a palindrome (5173462643715).

The spelling of 2051251122213 in words is "two trillion, fifty-one billion, two hundred fifty-one million, one hundred twenty-two thousand, two hundred thirteen".