21198241350 has 192 divisors, whose sum is σ = 68625607680. Its totient is φ = 4743619200.

The previous prime is 21198241313. The next prime is 21198241373. The reversal of 21198241350 is 5314289112.

21198241350 is a `hidden beast` number, since 2 + 1 + 198 + 2 + 413 + 50 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 138147 + ... + 247953.

It is an arithmetic number, because the mean of its divisors is an integer number (357425040).

Almost surely, 2^21198241350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21198241350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34312803840).

21198241350 is an abundant number, since it is smaller than the sum of its proper divisors (47427366330).

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

21198241350 is a wasteful number, since it uses less digits than its factorization.

21198241350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109852 (or 109841 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 21198241350 in words is "twenty-one billion, one hundred ninety-eight million, two hundred forty-one thousand, three hundred fifty".