1200021029999 has 8 divisors (see below), whose sum is σ = 1309267263360. Its totient is φ = 1090800365400.

The previous prime is 1200021029981. The next prime is 1200021030023. The reversal of 1200021029999 is 9999201200021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200021029999 - 2³² = 1195726062703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200021029929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6293987 + ... + 6481844.

It is an arithmetic number, because the mean of its divisors is an integer number (163658407920).

Almost surely, 2^{1200021029999} is an apocalyptic number.

1200021029999 is a deficient number, since it is larger than the sum of its proper divisors (109246233361).

1200021029999 is a wasteful number, since it uses less digits than its factorization.

1200021029999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12784381.

The product of its (nonzero) digits is 52488, while the sum is 44.

The spelling of 1200021029999 in words is "one trillion, two hundred billion, twenty-one million, twenty-nine thousand, nine hundred ninety-nine".