1212110225 has 48 divisors (see below), whose sum is σ = 1622753280. Its totient is φ = 895406400.

The previous prime is 1212110209. The next prime is 1212110227. The reversal of 1212110225 is 5220112121.

It is not a de Polignac number, because 1212110225 - 2⁴ = 1212110209 is a prime.

It is a super-2 number, since 2×1212110225² = 2938422395099101250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1212110227) 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, 4282934 + ... + 4283216.

It is an arithmetic number, because the mean of its divisors is an integer number (33807360).

Almost surely, 2^1212110225 is an apocalyptic number.

It is an amenable number.

1212110225 is a deficient number, since it is larger than the sum of its proper divisors (410643055).

1212110225 is a wasteful number, since it uses less digits than its factorization.

1212110225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1212110225 is about 34815.3734002667. The cubic root of 1212110225 is about 1066.2213426986.

Adding to 1212110225 its reverse (5220112121), we get a palindrome (6432222346).

The spelling of 1212110225 in words is "one billion, two hundred twelve million, one hundred ten thousand, two hundred twenty-five".