2051200321 has 2 divisors, whose sum is σ = 2051200322. Its totient is φ = 2051200320.

The previous prime is 2051200303. The next prime is 2051200337. The reversal of 2051200321 is 1230021502.

It is an a-pointer prime, because the next prime (2051200337) can be obtained adding 2051200321 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1667823921 + 383376400 = 40839^2 + 19580^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051200321 - 2⁵ = 2051200289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2051200295 and 2051200304.

It is not a weakly prime, because it can be changed into another prime (2051200351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025600160 + 1025600161.

It is an arithmetic number, because the mean of its divisors is an integer number (1025600161).

Almost surely, 2^2051200321 is an apocalyptic number.

It is an amenable number.

2051200321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051200321 is an equidigital number, since it uses as much as digits as its factorization.

2051200321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2051200321 is about 45290.1790789129. The cubic root of 2051200321 is about 1270.5819807696.

Adding to 2051200321 its reverse (1230021502), we get a palindrome (3281221823).

The spelling of 2051200321 in words is "two billion, fifty-one million, two hundred thousand, three hundred twenty-one".