1013203434221 has 24 divisors (see below), whose sum is σ = 1230466894272. Its totient is φ = 829220163200.

The previous prime is 1013203434197. The next prime is 1013203434251. The reversal of 1013203434221 is 1224343023101.

It is not a de Polignac number, because 1013203434221 - 2¹⁰ = 1013203433197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013203434251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10660595 + ... + 10755216.

It is an arithmetic number, because the mean of its divisors is an integer number (51269453928).

Almost surely, 2^{1013203434221} is an apocalyptic number.

1013203434221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1013203434221 is a deficient number, since it is larger than the sum of its proper divisors (217263460051).

1013203434221 is a wasteful number, since it uses less digits than its factorization.

1013203434221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21415873 (or 21415862 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1013203434221 its reverse (1224343023101), we get a palindrome (2237546457322).

The spelling of 1013203434221 in words is "one trillion, thirteen billion, two hundred three million, four hundred thirty-four thousand, two hundred twenty-one".