2051353121 has 2 divisors, whose sum is σ = 2051353122. Its totient is φ = 2051353120.

The previous prime is 2051353099. The next prime is 2051353133. The reversal of 2051353121 is 1213531502.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1525293025 + 526060096 = 39055^2 + 22936^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051353121 - 2¹⁴ = 2051336737 is a prime.

It is not a weakly prime, because it can be changed into another prime (2051353151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025676560 + 1025676561.

It is an arithmetic number, because the mean of its divisors is an integer number (1025676561).

Almost surely, 2^2051353121 is an apocalyptic number.

It is an amenable number.

2051353121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051353121 is an equidigital number, since it uses as much as digits as its factorization.

2051353121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 2051353121 is about 45291.8659474303. The cubic root of 2051353121 is about 1270.6135297938.

Adding to 2051353121 its reverse (1213531502), we get a palindrome (3264884623).

The spelling of 2051353121 in words is "two billion, fifty-one million, three hundred fifty-three thousand, one hundred twenty-one".