2121055529 has 2 divisors, whose sum is σ = 2121055530. Its totient is φ = 2121055528.

The previous prime is 2121055457. The next prime is 2121055549. The reversal of 2121055529 is 9255501212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1235874025 + 885181504 = 35155^2 + 29752^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121055529 - 2¹² = 2121051433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121055495 and 2121055504.

It is not a weakly prime, because it can be changed into another prime (2121055549) 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 as a sum of consecutive naturals, namely, 1060527764 + 1060527765.

It is an arithmetic number, because the mean of its divisors is an integer number (1060527765).

Almost surely, 2^2121055529 is an apocalyptic number.

It is an amenable number.

2121055529 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121055529 is an equidigital number, since it uses as much as digits as its factorization.

2121055529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 2121055529 is about 46054.9186189705. The cubic root of 2121055529 is about 1284.8448245348.

The spelling of 2121055529 in words is "two billion, one hundred twenty-one million, fifty-five thousand, five hundred twenty-nine".