2001216994 has 8 divisors (see below), whose sum is σ = 3430657728. Its totient is φ = 857664420.

The previous prime is 2001216979. The next prime is 2001217013. The reversal of 2001216994 is 4996121002.

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, 71472022 + ... + 71472049.

It is an arithmetic number, because the mean of its divisors is an integer number (428832216).

Almost surely, 2^2001216994 is an apocalyptic number.

2001216994 is a deficient number, since it is larger than the sum of its proper divisors (1429440734).

2001216994 is a wasteful number, since it uses less digits than its factorization.

2001216994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142944080.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 2001216994 is about 44734.9638873220. The cubic root of 2001216994 is about 1260.1765508044.

Adding to 2001216994 its reverse (4996121002), we get a palindrome (6997337996).

The spelling of 2001216994 in words is "two billion, one million, two hundred sixteen thousand, nine hundred ninety-four".