1213425012 has 48 divisors (see below), whose sum is σ = 2905463232. Its totient is φ = 393918720.

The previous prime is 1213424981. The next prime is 1213425019. The reversal of 1213425012 is 2105243121.

It is a self number, because there is not a number n which added to its sum of digits gives 1213425012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213425019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331263 + ... + 334905.

It is an arithmetic number, because the mean of its divisors is an integer number (60530484).

Almost surely, 2^1213425012 is an apocalyptic number.

1213425012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213425012 is an abundant number, since it is smaller than the sum of its proper divisors (1692038220).

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

1213425012 is a wasteful number, since it uses less digits than its factorization.

1213425012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4368 (or 4366 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1213425012 is about 34834.2505588968. The cubic root of 1213425012 is about 1066.6067167262.

Adding to 1213425012 its reverse (2105243121), we get a palindrome (3318668133).

The spelling of 1213425012 in words is "one billion, two hundred thirteen million, four hundred twenty-five thousand, twelve".