1221400202303 has 8 divisors (see below), whose sum is σ = 1222990925520. Its totient is φ = 1219809689280.

The previous prime is 1221400202263. The next prime is 1221400202371. The reversal of 1221400202303 is 3032020041221.

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 1221400202303 - 2²⁰ = 1221399153727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221400202203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14000603 + ... + 14087571.

It is an arithmetic number, because the mean of its divisors is an integer number (152873865690).

Almost surely, 2^{1221400202303} is an apocalyptic number.

1221400202303 is a deficient number, since it is larger than the sum of its proper divisors (1590723217).

1221400202303 is an equidigital number, since it uses as much as digits as its factorization.

1221400202303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105097.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1221400202303 its reverse (3032020041221), we get a palindrome (4253420243524).

The spelling of 1221400202303 in words is "one trillion, two hundred twenty-one billion, four hundred million, two hundred two thousand, three hundred three".