1212315284 has 12 divisors (see below), whose sum is σ = 2122928724. Its totient is φ = 605764224.

The previous prime is 1212315283. The next prime is 1212315287. The reversal of 1212315284 is 4825132121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 730512784 + 481802500 = 27028^2 + 21950^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212315283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91367 + ... + 103790.

It is an arithmetic number, because the mean of its divisors is an integer number (176910727).

Almost surely, 2^1212315284 is an apocalyptic number.

It is an amenable number.

1212315284 is a deficient number, since it is larger than the sum of its proper divisors (910613440).

1212315284 is a wasteful number, since it uses less digits than its factorization.

1212315284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196714 (or 196712 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 1212315284 is about 34818.3182247506. The cubic root of 1212315284 is about 1066.2814653810.

The spelling of 1212315284 in words is "one billion, two hundred twelve million, three hundred fifteen thousand, two hundred eighty-four".