1022312512 has 28 divisors (see below), whose sum is σ = 2184703276. Its totient is φ = 471836160.

The previous prime is 1022312507. The next prime is 1022312519. The reversal of 1022312512 is 2152132201.

It can be written as a sum of positive squares in 2 ways, for example, as 121352256 + 900960256 = 11016^2 + 30016^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1022312512.

It is not an unprimeable number, because it can be changed into a prime (1022312519) by changing a digit.

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, 613539 + ... + 615202.

It is an arithmetic number, because the mean of its divisors is an integer number (78025117).

Almost surely, 2^1022312512 is an apocalyptic number.

It is an amenable number.

1022312512 is an abundant number, since it is smaller than the sum of its proper divisors (1162390764).

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

1022312512 is a wasteful number, since it uses less digits than its factorization.

1022312512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228766 (or 1228756 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1022312512 is about 31973.6221282482. The cubic root of 1022312512 is about 1007.3828631927.

Adding to 1022312512 its reverse (2152132201), we get a palindrome (3174444713).

The spelling of 1022312512 in words is "one billion, twenty-two million, three hundred twelve thousand, five hundred twelve".