1200022011221 has 8 divisors (see below), whose sum is σ = 1312480260000. Its totient is φ = 1088124652240.

The previous prime is 1200022011217. The next prime is 1200022011281. The reversal of 1200022011221 is 1221102200021.

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 1200022011221 - 2² = 1200022011217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200022011196 and 1200022011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200022011281) 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, 140217971 + ... + 140226528.

It is an arithmetic number, because the mean of its divisors is an integer number (164060032500).

Almost surely, 2^{1200022011221} is an apocalyptic number.

1200022011221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200022011221 is a deficient number, since it is larger than the sum of its proper divisors (112458248779).

1200022011221 is a wasteful number, since it uses less digits than its factorization.

1200022011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280444899.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1200022011221 its reverse (1221102200021), we get a palindrome (2421124211242).

The spelling of 1200022011221 in words is "one trillion, two hundred billion, twenty-two million, eleven thousand, two hundred twenty-one".