2120251069 has 2 divisors, whose sum is σ = 2120251070. Its totient is φ = 2120251068.

The previous prime is 2120251039. The next prime is 2120251109. The reversal of 2120251069 is 9601520212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1894860900 + 225390169 = 43530^2 + 15013^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120251069 - 2¹³ = 2120242877 is a prime.

It is a super-2 number, since 2×2120251069² = 8990929191191285522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120251039) 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, 1060125534 + 1060125535.

It is an arithmetic number, because the mean of its divisors is an integer number (1060125535).

Almost surely, 2^2120251069 is an apocalyptic number.

It is an amenable number.

2120251069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120251069 is an equidigital number, since it uses as much as digits as its factorization.

2120251069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2120251069 is about 46046.1840872835. The cubic root of 2120251069 is about 1284.6823681612.

The spelling of 2120251069 in words is "two billion, one hundred twenty million, two hundred fifty-one thousand, sixty-nine".