1201222225 has 12 divisors (see below), whose sum is σ = 1702303744. Its totient is φ = 823695120.

The previous prime is 1201222207. The next prime is 1201222259. The reversal of 1201222225 is 5222221021.

It is not a de Polignac number, because 1201222225 - 2¹⁷ = 1201091153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3431889 + ... + 3432238.

Almost surely, 2^1201222225 is an apocalyptic number.

It is an amenable number.

1201222225 is a deficient number, since it is larger than the sum of its proper divisors (501081519).

1201222225 is an equidigital number, since it uses as much as digits as its factorization.

1201222225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6864144 (or 6864139 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1201222225 is about 34658.6529599752. The cubic root of 1201222225 is about 1063.0192267284.

Adding to 1201222225 its reverse (5222221021), we get a palindrome (6423443246).

The spelling of 1201222225 in words is "one billion, two hundred one million, two hundred twenty-two thousand, two hundred twenty-five".