1001111221002 has 16 divisors (see below), whose sum is σ = 2002474357632. Its totient is φ = 333661754400.

The previous prime is 1001111220983. The next prime is 1001111221007. The reversal of 1001111221002 is 2001221111001.

It is a super-2 number, since 2×1001111221002² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1001111221007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10444803 + ... + 10540214.

It is an arithmetic number, because the mean of its divisors is an integer number (125154647352).

Almost surely, 2^{1001111221002} is an apocalyptic number.

1001111221002 is an abundant number, since it is smaller than the sum of its proper divisors (1001363136630).

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

1001111221002 is a wasteful number, since it uses less digits than its factorization.

1001111221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20992973.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1001111221002 its reverse (2001221111001), we get a palindrome (3002332332003).

The spelling of 1001111221002 in words is "one trillion, one billion, one hundred eleven million, two hundred twenty-one thousand, two".