201122250 has 128 divisors (see below), whose sum is σ = 593948160. Its totient is φ = 44352000.

The previous prime is 201122249. The next prime is 201122267. The reversal of 201122250 is 52221102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 151590 + ... + 152910.

It is an arithmetic number, because the mean of its divisors is an integer number (4640220).

Almost surely, 2^201122250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201122250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296974080).

201122250 is an abundant number, since it is smaller than the sum of its proper divisors (392825910).

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

201122250 is a wasteful number, since it uses less digits than its factorization.

201122250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377 (or 1367 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 201122250 is about 14181.7576484722. The cubic root of 201122250 is about 585.8953343879.

Adding to 201122250 its reverse (52221102), we get a palindrome (253343352).

The spelling of 201122250 in words is "two hundred one million, one hundred twenty-two thousand, two hundred fifty".