1217450012 has 12 divisors (see below), whose sum is σ = 2130891000. Its totient is φ = 608624016.

The previous prime is 1217449999. The next prime is 1217450021. The reversal of 1217450012 is 2100547121.

It is a self number, because there is not a number n which added to its sum of digits gives 1217450012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6239 + ... + 49737.

It is an arithmetic number, because the mean of its divisors is an integer number (177574250).

Almost surely, 2^1217450012 is an apocalyptic number.

It is an amenable number.

1217450012 is a deficient number, since it is larger than the sum of its proper divisors (913440988).

1217450012 is a wasteful number, since it uses less digits than its factorization.

1217450012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50500 (or 50498 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 1217450012 is about 34891.9763269437. The cubic root of 1217450012 is about 1067.7847469327.

Adding to 1217450012 its reverse (2100547121), we get a palindrome (3317997133).

The spelling of 1217450012 in words is "one billion, two hundred seventeen million, four hundred fifty thousand, twelve".