1200221120021 has 8 divisors (see below), whose sum is σ = 1496379578304. Its totient is φ = 935237236320.

The previous prime is 1200221120003. The next prime is 1200221120039. The reversal of 1200221120021 is 1200211220021.

It is an interprime number because it is at equal distance from previous prime (1200221120003) and next prime (1200221120039).

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 1200221120021 - 2¹⁴ = 1200221103637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200221119978 and 1200221120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200221120051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7793643560 + ... + 7793643713.

It is an arithmetic number, because the mean of its divisors is an integer number (187047447288).

Almost surely, 2^{1200221120021} is an apocalyptic number.

1200221120021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200221120021 is a deficient number, since it is larger than the sum of its proper divisors (296158458283).

1200221120021 is a wasteful number, since it uses less digits than its factorization.

1200221120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15587287291.

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

Adding to 1200221120021 its reverse (1200211220021), we get a palindrome (2400432340042).

The spelling of 1200221120021 in words is "one trillion, two hundred billion, two hundred twenty-one million, one hundred twenty thousand, twenty-one".