1200202110021 has 8 divisors (see below), whose sum is σ = 1607257557280. Its totient is φ = 796640701392.

The previous prime is 1200202110017. The next prime is 1200202110061. The reversal of 1200202110021 is 1200112020021.

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

It is not a de Polignac number, because 1200202110021 - 2² = 1200202110017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1200202109979 and 1200202110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200202110061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 873508855 + ... + 873510228.

It is an arithmetic number, because the mean of its divisors is an integer number (200907194660).

Almost surely, 2^{1200202110021} is an apocalyptic number.

It is an amenable number.

1200202110021 is a deficient number, since it is larger than the sum of its proper divisors (407055447259).

1200202110021 is a wasteful number, since it uses less digits than its factorization.

1200202110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747019315.

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

Adding to 1200202110021 its reverse (1200112020021), we get a palindrome (2400314130042).

The spelling of 1200202110021 in words is "one trillion, two hundred billion, two hundred two million, one hundred ten thousand, twenty-one".