2121011339 has 2 divisors, whose sum is σ = 2121011340. Its totient is φ = 2121011338.

The previous prime is 2121011327. The next prime is 2121011353. The reversal of 2121011339 is 9331101212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121011339 - 2¹² = 2121007243 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2121011639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060505669 + 1060505670.

It is an arithmetic number, because the mean of its divisors is an integer number (1060505670).

Almost surely, 2^2121011339 is an apocalyptic number.

2121011339 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121011339 is an equidigital number, since it uses as much as digits as its factorization.

2121011339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 2121011339 is about 46054.4388631541. The cubic root of 2121011339 is about 1284.8359016681.

The spelling of 2121011339 in words is "two billion, one hundred twenty-one million, eleven thousand, three hundred thirty-nine".