2121668846 has 8 divisors (see below), whose sum is σ = 3471821784. Its totient is φ = 964394920.

The previous prime is 2121668807. The next prime is 2121668869. The reversal of 2121668846 is 6488661212.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 2121668797 and 2121668806.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 48219725 + ... + 48219768.

It is an arithmetic number, because the mean of its divisors is an integer number (433977723).

Almost surely, 2^2121668846 is an apocalyptic number.

2121668846 is a deficient number, since it is larger than the sum of its proper divisors (1350152938).

2121668846 is a wasteful number, since it uses less digits than its factorization.

2121668846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96439506.

The product of its digits is 221184, while the sum is 44.

The square root of 2121668846 is about 46061.5766773132. The cubic root of 2121668846 is about 1284.9686530126.

The spelling of 2121668846 in words is "two billion, one hundred twenty-one million, six hundred sixty-eight thousand, eight hundred forty-six".