1312220122 has 8 divisors (see below), whose sum is σ = 1968936372. Its totient is φ = 655908000.

The previous prime is 1312220093. The next prime is 1312220141. The reversal of 1312220122 is 2210222131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1135622601 + 176597521 = 33699^2 + 13289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1312220096 and 1312220105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92779 + ... + 105982.

Almost surely, 2^1312220122 is an apocalyptic number.

1312220122 is a deficient number, since it is larger than the sum of its proper divisors (656716250).

1312220122 is a wasteful number, since it uses less digits than its factorization.

1312220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202064.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1312220122 is about 36224.5789761593. The cubic root of 1312220122 is about 1094.8019552454.

Adding to 1312220122 its reverse (2210222131), we get a palindrome (3522442253).

The spelling of 1312220122 in words is "one billion, three hundred twelve million, two hundred twenty thousand, one hundred twenty-two".