2001216602 has 16 divisors (see below), whose sum is σ = 3742535232. Its totient is φ = 779694720.

The previous prime is 2001216589. The next prime is 2001216631. The reversal of 2001216602 is 2066121002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6497303 + ... + 6497610.

It is an arithmetic number, because the mean of its divisors is an integer number (233908452).

Almost surely, 2^2001216602 is an apocalyptic number.

2001216602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2001216602 is a deficient number, since it is larger than the sum of its proper divisors (1741318630).

2001216602 is a wasteful number, since it uses less digits than its factorization.

2001216602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12994933.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2001216602 is about 44734.9595059613. The cubic root of 2001216602 is about 1260.1764685229.

Adding to 2001216602 its reverse (2066121002), we get a palindrome (4067337604).

The spelling of 2001216602 in words is "two billion, one million, two hundred sixteen thousand, six hundred two".