1221341202103 has 6 divisors (see below), whose sum is σ = 1342465949552. Its totient is φ = 1110310183620.

The previous prime is 1221341202089. The next prime is 1221341202139. The reversal of 1221341202103 is 3012021431221.

It is a de Polignac number, because none of the positive numbers 2^k-1221341202103 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 (1221341202203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5046864351 + ... + 5046864592.

Almost surely, 2^{1221341202103} is an apocalyptic number.

1221341202103 is a deficient number, since it is larger than the sum of its proper divisors (121124747449).

1221341202103 is a wasteful number, since it uses less digits than its factorization.

1221341202103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10093728965 (or 10093728954 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1221341202103 its reverse (3012021431221), we get a palindrome (4233362633324).

The spelling of 1221341202103 in words is "one trillion, two hundred twenty-one billion, three hundred forty-one million, two hundred two thousand, one hundred three".