1312020122 has 16 divisors (see below), whose sum is σ = 2252120640. Its totient is φ = 561558528.

The previous prime is 1312020113. The next prime is 1312020133. The reversal of 1312020122 is 2210202131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1312020097 and 1312020106.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 50168 + ... + 71699.

It is an arithmetic number, because the mean of its divisors is an integer number (140757540).

Almost surely, 2^1312020122 is an apocalyptic number.

1312020122 is a deficient number, since it is larger than the sum of its proper divisors (940100518).

1312020122 is a wasteful number, since it uses less digits than its factorization.

1312020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122645.

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

The square root of 1312020122 is about 36221.8183143806. The cubic root of 1312020122 is about 1094.7463315706.

Adding to 1312020122 its reverse (2210202131), we get a palindrome (3522222253).

The spelling of 1312020122 in words is "one billion, three hundred twelve million, twenty thousand, one hundred twenty-two".