1000221121002 has 16 divisors (see below), whose sum is σ = 2000495732832. Its totient is φ = 333398125200.

The previous prime is 1000221120961. The next prime is 1000221121069. The reversal of 1000221121002 is 2001211220001.

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, 1983624 + ... + 2436227.

It is an arithmetic number, because the mean of its divisors is an integer number (125030983302).

Almost surely, 2^{1000221121002} is an apocalyptic number.

1000221121002 is an abundant number, since it is smaller than the sum of its proper divisors (1000274611830).

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

1000221121002 is a wasteful number, since it uses less digits than its factorization.

1000221121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4457573.

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

Adding to 1000221121002 its reverse (2001211220001), we get a palindrome (3001432341003).

The spelling of 1000221121002 in words is "one trillion, two hundred twenty-one million, one hundred twenty-one thousand, two".