201102225 has 48 divisors (see below), whose sum is σ = 351917952. Its totient is φ = 101122560.

The previous prime is 201102199. The next prime is 201102227. The reversal of 201102225 is 522201102.

It is not a de Polignac number, because 201102225 - 2⁸ = 201101969 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (201102227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125127 + ... + 126723.

It is an arithmetic number, because the mean of its divisors is an integer number (7331624).

Almost surely, 2^201102225 is an apocalyptic number.

201102225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201102225 is a deficient number, since it is larger than the sum of its proper divisors (150815727).

201102225 is a wasteful number, since it uses less digits than its factorization.

201102225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706 (or 1701 counting only the distinct ones).

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

The square root of 201102225 is about 14181.0516182687. The cubic root of 201102225 is about 585.8758885973.

Adding to 201102225 its reverse (522201102), we get a palindrome (723303327).

The spelling of 201102225 in words is "two hundred one million, one hundred two thousand, two hundred twenty-five".