2001222221002 has 8 divisors (see below), whose sum is σ = 3008963578212. Its totient is φ = 998234361600.

The previous prime is 2001222220999. The next prime is 2001222221021.

2001222221002 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 1625525551521 + 375696669481 = 1274961^2 + 612941^2 .

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, 1188373399 + ... + 1188375082.

Almost surely, 2^{2001222221002} is an apocalyptic number.

2001222221002 is a deficient number, since it is larger than the sum of its proper divisors (1007741357210).

2001222221002 is a wasteful number, since it uses less digits than its factorization.

2001222221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376748904.

The product of its (nonzero) digits is 128, while the sum is 16.

The spelling of 2001222221002 in words is "two trillion, one billion, two hundred twenty-two million, two hundred twenty-one thousand, two".