1200200011021 has 16 divisors (see below), whose sum is σ = 1315795143168. Its totient is φ = 1085688097200.

The previous prime is 1200200011001. The next prime is 1200200011081. The reversal of 1200200011021 is 1201100020021.

It is a cyclic number.

It is not a de Polignac number, because 1200200011021 - 2¹³ = 1200200002829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200200010989 and 1200200011007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200200011001) 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 15 ways as a sum of consecutive naturals, for example, 11327130 + ... + 11432596.

It is an arithmetic number, because the mean of its divisors is an integer number (82237196448).

Almost surely, 2^{1200200011021} is an apocalyptic number.

1200200011021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200200011021 is a deficient number, since it is larger than the sum of its proper divisors (115595132147).

1200200011021 is a wasteful number, since it uses less digits than its factorization.

1200200011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110592.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1200200011021 its reverse (1201100020021), we get a palindrome (2401300031042).

The spelling of 1200200011021 in words is "one trillion, two hundred billion, two hundred million, eleven thousand, twenty-one".