21053241350 has 12 divisors (see below), whose sum is σ = 39159029004. Its totient is φ = 8421296520.

The previous prime is 21053241323. The next prime is 21053241353. The reversal of 21053241350 is 5314235012.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21053241353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210532364 + ... + 210532463.

It is an arithmetic number, because the mean of its divisors is an integer number (3263252417).

Almost surely, 2^21053241350 is an apocalyptic number.

21053241350 is a deficient number, since it is larger than the sum of its proper divisors (18105787654).

21053241350 is a wasteful number, since it uses less digits than its factorization.

21053241350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421064839 (or 421064834 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 21053241350 its reverse (5314235012), we get a palindrome (26367476362).

The spelling of 21053241350 in words is "twenty-one billion, fifty-three million, two hundred forty-one thousand, three hundred fifty".