1220200212001 has 4 divisors (see below), whose sum is σ = 1220205088404. Its totient is φ = 1220195335600.

The previous prime is 1220200211987. The next prime is 1220200212109. The reversal of 1220200212001 is 1002120020221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 661092581776 + 559107630225 = 813076^2 + 747735^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220200212001 - 2⁷ = 1220200211873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220200212601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2041330 + ... + 2570491.

It is an arithmetic number, because the mean of its divisors is an integer number (305051272101).

Almost surely, 2^{1220200212001} is an apocalyptic number.

It is an amenable number.

1220200212001 is a deficient number, since it is larger than the sum of its proper divisors (4876403).

1220200212001 is an equidigital number, since it uses as much as digits as its factorization.

1220200212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4876402.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1220200212001 its reverse (1002120020221), we get a palindrome (2222320232222).

The spelling of 1220200212001 in words is "one trillion, two hundred twenty billion, two hundred million, two hundred twelve thousand, one".