1021221003201 has 8 divisors (see below), whose sum is σ = 1556146290624. Its totient is φ = 583554858960.

The previous prime is 1021221003157. The next prime is 1021221003239. The reversal of 1021221003201 is 1023001221201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021221003201 - 2⁹ = 1021221002689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021221003241) 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, 24314785770 + ... + 24314785811.

It is an arithmetic number, because the mean of its divisors is an integer number (194518286328).

Almost surely, 2^{1021221003201} is an apocalyptic number.

It is an amenable number.

1021221003201 is a deficient number, since it is larger than the sum of its proper divisors (534925287423).

1021221003201 is an equidigital number, since it uses as much as digits as its factorization.

1021221003201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48629571591.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1021221003201 its reverse (1023001221201), we get a palindrome (2044222224402).

The spelling of 1021221003201 in words is "one trillion, twenty-one billion, two hundred twenty-one million, three thousand, two hundred one".