2121323343658 has 8 divisors (see below), whose sum is σ = 3182027791680. Its totient is φ = 1060647413100.

The previous prime is 2121323343619. The next prime is 2121323343673. The reversal of 2121323343658 is 8563433231212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6942418 + ... + 7241533.

It is an arithmetic number, because the mean of its divisors is an integer number (397753473960).

Almost surely, 2^{2121323343658} is an apocalyptic number.

2121323343658 is a deficient number, since it is larger than the sum of its proper divisors (1060704448022).

2121323343658 is a wasteful number, since it uses less digits than its factorization.

2121323343658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14258732.

The product of its digits is 622080, while the sum is 43.

The spelling of 2121323343658 in words is "two trillion, one hundred twenty-one billion, three hundred twenty-three million, three hundred forty-three thousand, six hundred fifty-eight".