2121213079 has 2 divisors, whose sum is σ = 2121213080. Its totient is φ = 2121213078.

The previous prime is 2121213041. The next prime is 2121213089. The reversal of 2121213079 is 9703121212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121213079 - 2²⁹ = 1584342167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121213089) 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, 1060606539 + 1060606540.

It is an arithmetic number, because the mean of its divisors is an integer number (1060606540).

Almost surely, 2^2121213079 is an apocalyptic number.

2121213079 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121213079 is an equidigital number, since it uses as much as digits as its factorization.

2121213079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 2121213079 is about 46056.6290451223. The cubic root of 2121213079 is about 1284.8766361003.

The spelling of 2121213079 in words is "two billion, one hundred twenty-one million, two hundred thirteen thousand, seventy-nine".