1312021022 has 24 divisors (see below), whose sum is σ = 2243235960. Its totient is φ = 573674400.

The previous prime is 1312021021. The next prime is 1312021037. The reversal of 1312021022 is 2201202131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1312020988 and 1312021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312021021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95729 + ... + 108572.

It is an arithmetic number, because the mean of its divisors is an integer number (93468165).

Almost surely, 2^1312021022 is an apocalyptic number.

1312021022 is a deficient number, since it is larger than the sum of its proper divisors (931214938).

1312021022 is a wasteful number, since it uses less digits than its factorization.

1312021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204348 (or 204335 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1312021022 is about 36221.8307378299. The cubic root of 1312021022 is about 1094.7465818898.

Adding to 1312021022 its reverse (2201202131), we get a palindrome (3513223153).

The spelling of 1312021022 in words is "one billion, three hundred twelve million, twenty-one thousand, twenty-two".