1213225292 has 6 divisors (see below), whose sum is σ = 2123144268. Its totient is φ = 606612644.

The previous prime is 1213225267. The next prime is 1213225303. The reversal of 1213225292 is 2925223121.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 151653158 + ... + 151653165.

It is an arithmetic number, because the mean of its divisors is an integer number (353857378).

Almost surely, 2^1213225292 is an apocalyptic number.

It is an amenable number.

1213225292 is a deficient number, since it is larger than the sum of its proper divisors (909918976).

1213225292 is a wasteful number, since it uses less digits than its factorization.

1213225292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303306327 (or 303306325 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 1213225292 is about 34831.3837221549. The cubic root of 1213225292 is about 1066.5481952190.

The spelling of 1213225292 in words is "one billion, two hundred thirteen million, two hundred twenty-five thousand, two hundred ninety-two".