2050220261 has 2 divisors, whose sum is σ = 2050220262. Its totient is φ = 2050220260.

The previous prime is 2050220219. The next prime is 2050220269. The reversal of 2050220261 is 1620220502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1797251236 + 252969025 = 42394^2 + 15905^2 .

It is a cyclic number.

It is not a de Polignac number, because 2050220261 - 2¹⁸ = 2049958117 is a prime.

It is a super-2 number, since 2×2050220261² = 8406806237229816242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2050220269) 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 as a sum of consecutive naturals, namely, 1025110130 + 1025110131.

It is an arithmetic number, because the mean of its divisors is an integer number (1025110131).

Almost surely, 2^2050220261 is an apocalyptic number.

It is an amenable number.

2050220261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2050220261 is an equidigital number, since it uses as much as digits as its factorization.

2050220261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2050220261 is about 45279.3580011908. The cubic root of 2050220261 is about 1270.3795879005.

Adding to 2050220261 its reverse (1620220502), we get a palindrome (3670440763).

The spelling of 2050220261 in words is "two billion, fifty million, two hundred twenty thousand, two hundred sixty-one".