21234105150 has 96 divisors (see below), whose sum is σ = 53040355200. Its totient is φ = 5621750400.

The previous prime is 21234105131. The next prime is 21234105161. The reversal of 21234105150 is 5150143212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21234105150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16865221 + ... + 16866479.

It is an arithmetic number, because the mean of its divisors is an integer number (552503700).

Almost surely, 2^21234105150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21234105150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26520177600).

21234105150 is an abundant number, since it is smaller than the sum of its proper divisors (31806250050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21234105150 is a wasteful number, since it uses less digits than its factorization.

21234105150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994 (or 1989 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 21234105150 its reverse (5150143212), we get a palindrome (26384248362).

The spelling of 21234105150 in words is "twenty-one billion, two hundred thirty-four million, one hundred five thousand, one hundred fifty".