2001221002 has 8 divisors (see below), whose sum is σ = 3274725312. Its totient is φ = 909645900.

The previous prime is 2001220987. The next prime is 2001221039.

2001221002 is nontrivially palindromic in base 10.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2001221002.

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, 45482274 + ... + 45482317.

It is an arithmetic number, because the mean of its divisors is an integer number (409340664).

Almost surely, 2^2001221002 is an apocalyptic number.

2001221002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2001221002 is a deficient number, since it is larger than the sum of its proper divisors (1273504310).

2001221002 is a wasteful number, since it uses less digits than its factorization.

2001221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90964604.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2001221002 is about 44735.0086844744. The cubic root of 2001221002 is about 1260.1773920899.

It can be divided in two parts, 20012 and 21002, that multiplied together give a palindrome (420292024).

The spelling of 2001221002 in words is "two billion, one million, two hundred twenty-one thousand, two".