201122240 has 112 divisors (see below), whose sum is σ = 553358304. Its totient is φ = 68812800.

The previous prime is 201122237. The next prime is 201122249. The reversal of 201122240 is 42221102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58160 + ... + 61520.

Almost surely, 2^201122240 is an apocalyptic number.

201122240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201122240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276679152).

201122240 is an abundant number, since it is smaller than the sum of its proper divisors (352236064).

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

201122240 is a wasteful number, since it uses less digits than its factorization.

201122240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3406 (or 3396 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 201122240 is about 14181.7572959066. The cubic root of 201122240 is about 585.8953246775.

Adding to 201122240 its reverse (42221102), we get a palindrome (243343342).

The spelling of 201122240 in words is "two hundred one million, one hundred twenty-two thousand, two hundred forty".