1301221310203 has 4 divisors (see below), whose sum is σ = 1336389453760. Its totient is φ = 1266053166648.

The previous prime is 1301221310201. The next prime is 1301221310243. The reversal of 1301221310203 is 3020131221031.

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

It is a cyclic number.

It is not a de Polignac number, because 1301221310203 - 2¹ = 1301221310201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1301221310201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17584071723 + ... + 17584071796.

It is an arithmetic number, because the mean of its divisors is an integer number (334097363440).

Almost surely, 2^{1301221310203} is an apocalyptic number.

1301221310203 is a deficient number, since it is larger than the sum of its proper divisors (35168143557).

1301221310203 is an equidigital number, since it uses as much as digits as its factorization.

1301221310203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35168143556.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1301221310203 its reverse (3020131221031), we get a palindrome (4321352531234).

The spelling of 1301221310203 in words is "one trillion, three hundred one billion, two hundred twenty-one million, three hundred ten thousand, two hundred three".