201021150 has 96 divisors (see below), whose sum is σ = 567606528. Its totient is φ = 46604800.

The previous prime is 201021137. The next prime is 201021167. The reversal of 201021150 is 51120102.

It is a Curzon number.

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, 35302 + ... + 40598.

It is an arithmetic number, because the mean of its divisors is an integer number (5912568).

Almost surely, 2^201021150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201021150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283803264).

201021150 is an abundant number, since it is smaller than the sum of its proper divisors (366585378).

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

201021150 is a wasteful number, since it uses less digits than its factorization.

201021150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5346 (or 5341 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 201021150 is about 14178.1927621259. The cubic root of 201021150 is about 585.7971454401.

Adding to 201021150 its reverse (51120102), we get a palindrome (252141252).

The spelling of 201021150 in words is "two hundred one million, twenty-one thousand, one hundred fifty".