1355221103203 has 8 divisors (see below), whose sum is σ = 1542702283776. Its totient is φ = 1178453133000.

The previous prime is 1355221103189. The next prime is 1355221103219. The reversal of 1355221103203 is 3023011225531.

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

It is a de Polignac number, because none of the positive numbers 2^k-1355221103203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1355221103263) 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, 2678302323 + ... + 2678302828.

It is an arithmetic number, because the mean of its divisors is an integer number (192837785472).

Almost surely, 2^{1355221103203} is an apocalyptic number.

1355221103203 is a deficient number, since it is larger than the sum of its proper divisors (187481180573).

1355221103203 is a wasteful number, since it uses less digits than its factorization.

1355221103203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356605185.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 1355221103203 its reverse (3023011225531), we get a palindrome (4378232328734).

The spelling of 1355221103203 in words is "one trillion, three hundred fifty-five billion, two hundred twenty-one million, one hundred three thousand, two hundred three".