201115224 has 40 divisors (see below), whose sum is σ = 563310660. Its totient is φ = 67038192.

The previous prime is 201115217. The next prime is 201115237. The reversal of 201115224 is 422511102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201115197 and 201115206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 154534 + ... + 155829.

Almost surely, 2^201115224 is an apocalyptic number.

201115224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

201115224 is an abundant number, since it is smaller than the sum of its proper divisors (362195436).

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

201115224 is a wasteful number, since it uses less digits than its factorization.

201115224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310381 (or 310368 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 201115224 is about 14181.5099337130. The cubic root of 201115224 is about 585.8885117572. Note that the first 3 decimals are identical.

Adding to 201115224 its reverse (422511102), we get a palindrome (623626326).

The spelling of 201115224 in words is "two hundred one million, one hundred fifteen thousand, two hundred twenty-four".