21244032150 has 96 divisors (see below), whose sum is σ = 60855712128. Its totient is φ = 4847116800.

The previous prime is 21244032149. The next prime is 21244032181. The reversal of 21244032150 is 5123044212.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21244032150.

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, 350632 + ... + 406731.

It is an arithmetic number, because the mean of its divisors is an integer number (633913668).

Almost surely, 2^21244032150 is an apocalyptic number.

21244032150 is an abundant number, since it is smaller than the sum of its proper divisors (39611679978).

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

21244032150 is a wasteful number, since it uses less digits than its factorization.

21244032150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757406 (or 757401 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 21244032150 its reverse (5123044212), we get a palindrome (26367076362).

The spelling of 21244032150 in words is "twenty-one billion, two hundred forty-four million, thirty-two thousand, one hundred fifty".