1213081292 has 12 divisors (see below), whose sum is σ = 2152792656. Its totient is φ = 597997680.

The previous prime is 1213081283. The next prime is 1213081357. The reversal of 1213081292 is 2921803121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2135423 + ... + 2135990.

It is an arithmetic number, because the mean of its divisors is an integer number (179399388).

Almost surely, 2^1213081292 is an apocalyptic number.

It is an amenable number.

1213081292 is a deficient number, since it is larger than the sum of its proper divisors (939711364).

1213081292 is a wasteful number, since it uses less digits than its factorization.

1213081292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271488 (or 4271486 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1213081292 is about 34829.3165594733. The cubic root of 1213081292 is about 1066.5059966765.

The spelling of 1213081292 in words is "one billion, two hundred thirteen million, eighty-one thousand, two hundred ninety-two".