10001221102002 has 64 divisors (see below), whose sum is σ = 21642415119360. Its totient is φ = 3062849385024.

The previous prime is 10001221101961. The next prime is 10001221102013. The reversal of 10001221102002 is 20020112210001.

It is a super-2 number, since 2×10001221102002² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18697843 + ... + 19225289.

It is an arithmetic number, because the mean of its divisors is an integer number (338162736240).

Almost surely, 2^{10001221102002} is an apocalyptic number.

10001221102002 is an abundant number, since it is smaller than the sum of its proper divisors (11641194017358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10001221102002 is a wasteful number, since it uses less digits than its factorization.

10001221102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528607.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10001221102002 its reverse (20020112210001), we get a palindrome (30021333312003).

The spelling of 10001221102002 in words is "ten trillion, one billion, two hundred twenty-one million, one hundred two thousand, two".