1200021112002 has 16 divisors (see below), whose sum is σ = 2401562219040. Its totient is φ = 399753704832.

The previous prime is 1200021111973. The next prime is 1200021112019. The reversal of 1200021112002 is 2002111200021.

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, 63322863 + ... + 63341810.

It is an arithmetic number, because the mean of its divisors is an integer number (150097638690).

Almost surely, 2^{1200021112002} is an apocalyptic number.

1200021112002 is an abundant number, since it is smaller than the sum of its proper divisors (1201541107038).

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

1200021112002 is a wasteful number, since it uses less digits than its factorization.

1200021112002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126666257.

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

Adding to 1200021112002 its reverse (2002111200021), we get a palindrome (3202132312023).

The spelling of 1200021112002 in words is "one trillion, two hundred billion, twenty-one million, one hundred twelve thousand, two".