10001001221002 has 32 divisors (see below), whose sum is σ = 16406417652480. Its totient is φ = 4534493134080.

The previous prime is 10001001220981. The next prime is 10001001221027. The reversal of 10001001221002 is 20012210010001.

It is a self number, because there is not a number n which added to its sum of digits gives 10001001221002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16310358 + ... + 16912414.

It is an arithmetic number, because the mean of its divisors is an integer number (512700551640).

Almost surely, 2^{10001001221002} is an apocalyptic number.

10001001221002 is a deficient number, since it is larger than the sum of its proper divisors (6405416431478).

10001001221002 is a wasteful number, since it uses less digits than its factorization.

10001001221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603966.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10001001221002 its reverse (20012210010001), we get a palindrome (30013211231003).

The spelling of 10001001221002 in words is "ten trillion, one billion, one million, two hundred twenty-one thousand, two".