1122220225 has 48 divisors (see below), whose sum is σ = 1638645120. Its totient is φ = 746380800.

The previous prime is 1122220207. The next prime is 1122220241. The reversal of 1122220225 is 5220222211.

It is not a de Polignac number, because 1122220225 - 2⁵ = 1122220193 is a prime.

It is a super-3 number, since 3×1122220225³ (a number of 28 digits) contains 333 as substring.

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, 1642734 + ... + 1643416.

It is an arithmetic number, because the mean of its divisors is an integer number (34138440).

Almost surely, 2^1122220225 is an apocalyptic number.

It is an amenable number.

1122220225 is a deficient number, since it is larger than the sum of its proper divisors (516424895).

1122220225 is a wasteful number, since it uses less digits than its factorization.

1122220225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970 (or 965 counting only the distinct ones).

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

The square root of 1122220225 is about 33499.5555940672. Note that the first 4 decimals coincide. The cubic root of 1122220225 is about 1039.1845879759.

Adding to 1122220225 its reverse (5220222211), we get a palindrome (6342442436).

The spelling of 1122220225 in words is "one billion, one hundred twenty-two million, two hundred twenty thousand, two hundred twenty-five".