1202201101221 has 4 divisors (see below), whose sum is σ = 1602934801632. Its totient is φ = 801467400812.

The previous prime is 1202201101207. The next prime is 1202201101237. The reversal of 1202201101221 is 1221011022021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1202201101221 - 2¹³ = 1202201093029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1202201101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202201101271) 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 3 ways as a sum of consecutive naturals, for example, 200366850201 + ... + 200366850206.

It is an arithmetic number, because the mean of its divisors is an integer number (400733700408).

Almost surely, 2^{1202201101221} is an apocalyptic number.

It is an amenable number.

1202201101221 is a deficient number, since it is larger than the sum of its proper divisors (400733700411).

1202201101221 is an equidigital number, since it uses as much as digits as its factorization.

1202201101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400733700410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1202201101221 its reverse (1221011022021), we get a palindrome (2423212123242).

The spelling of 1202201101221 in words is "one trillion, two hundred two billion, two hundred one million, one hundred one thousand, two hundred twenty-one".