2121354535379 has 2 divisors, whose sum is σ = 2121354535380. Its totient is φ = 2121354535378.

The previous prime is 2121354535369. The next prime is 2121354535427. The reversal of 2121354535379 is 9735354531212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121354535379 - 2²⁰ = 2121353486803 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2121354535369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060677267689 + 1060677267690.

It is an arithmetic number, because the mean of its divisors is an integer number (1060677267690).

Almost surely, 2^{2121354535379} is an apocalyptic number.

2121354535379 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121354535379 is an equidigital number, since it uses as much as digits as its factorization.

2121354535379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402000, while the sum is 50.

The spelling of 2121354535379 in words is "two trillion, one hundred twenty-one billion, three hundred fifty-four million, five hundred thirty-five thousand, three hundred seventy-nine".