22197501236250 has 480 divisors, whose sum is σ = 64308500942400. Its totient is φ = 5515703424000.

The previous prime is 22197501236243. The next prime is 22197501236329. The reversal of 22197501236250 is 5263210579122.

22197501236250 is a `hidden beast` number, since 2 + 2 + 1 + 9 + 7 + 5 + 0 + 12 + 3 + 625 + 0 = 666.

It is a super-2 number, since 2×22197501236250² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22197501236196 and 22197501236205.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 3747675789 + ... + 3747681711.

It is an arithmetic number, because the mean of its divisors is an integer number (133976043630).

Almost surely, 2^{22197501236250} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22197501236250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32154250471200).

22197501236250 is an abundant number, since it is smaller than the sum of its proper divisors (42110999706150).

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

22197501236250 is a wasteful number, since it uses less digits than its factorization.

22197501236250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6256 (or 6238 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 22197501236250 in words is "twenty-two trillion, one hundred ninety-seven billion, five hundred one million, two hundred thirty-six thousand, two hundred fifty".