1225342212 has 12 divisors (see below), whose sum is σ = 2859131856. Its totient is φ = 408447400.

The previous prime is 1225342207. The next prime is 1225342213. The reversal of 1225342212 is 2122435221.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1225342213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51055914 + ... + 51055937.

It is an arithmetic number, because the mean of its divisors is an integer number (238260988).

Almost surely, 2^1225342212 is an apocalyptic number.

1225342212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1225342212 is an abundant number, since it is smaller than the sum of its proper divisors (1633789644).

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

1225342212 is a wasteful number, since it uses less digits than its factorization.

1225342212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102111858 (or 102111856 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 1225342212 is about 35004.8884014790. Note that the first 3 decimals coincide. The cubic root of 1225342212 is about 1070.0871073581.

Adding to 1225342212 its reverse (2122435221), we get a palindrome (3347777433).

The spelling of 1225342212 in words is "one billion, two hundred twenty-five million, three hundred forty-two thousand, two hundred twelve".