21355343330150 has 24 divisors (see below), whose sum is σ = 39721075152024. Its totient is φ = 8542107964800.

The previous prime is 21355343330129. The next prime is 21355343330159. The reversal of 21355343330150 is 5103334355312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21355343330159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19447790 + ... + 20516510.

It is an arithmetic number, because the mean of its divisors is an integer number (1655044798001).

Almost surely, 2^{21355343330150} is an apocalyptic number.

21355343330150 is a deficient number, since it is larger than the sum of its proper divisors (18365731821874).

21355343330150 is a wasteful number, since it uses less digits than its factorization.

21355343330150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468376 (or 1468371 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 38.

Adding to 21355343330150 its reverse (5103334355312), we get a palindrome (26458677685462).

The spelling of 21355343330150 in words is "twenty-one trillion, three hundred fifty-five billion, three hundred forty-three million, three hundred thirty thousand, one hundred fifty".