1200021111002 has 16 divisors (see below), whose sum is σ = 2073377310720. Its totient is φ = 510245196048.

The previous prime is 1200021110993. The next prime is 1200021111011. The reversal of 1200021111002 is 2001111200021.

It is an interprime number because it is at equal distance from previous prime (1200021110993) and next prime (1200021111011).

It is an unprimeable number.

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, 337461977 + ... + 337465532.

It is an arithmetic number, because the mean of its divisors is an integer number (129586081920).

Almost surely, 2^{1200021111002} is an apocalyptic number.

1200021111002 is a deficient number, since it is larger than the sum of its proper divisors (873356199718).

1200021111002 is a wasteful number, since it uses less digits than its factorization.

1200021111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674927645.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1200021111002 its reverse (2001111200021), we get a palindrome (3201132311023).

The spelling of 1200021111002 in words is "one trillion, two hundred billion, twenty-one million, one hundred eleven thousand, two".