1311210122 has 8 divisors (see below), whose sum is σ = 1988914500. Its totient is φ = 648238624.

The previous prime is 1311210113. The next prime is 1311210127. The reversal of 1311210122 is 2210121131.

It can be written as a sum of positive squares in 2 ways, for example, as 1293912841 + 17297281 = 35971^2 + 4159^2 .

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 = 1311210097 and 1311210106.

It is not an unprimeable number, because it can be changed into a prime (1311210127) 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, 3682997 + ... + 3683352.

Almost surely, 2^1311210122 is an apocalyptic number.

1311210122 is a deficient number, since it is larger than the sum of its proper divisors (677704378).

1311210122 is an equidigital number, since it uses as much as digits as its factorization.

1311210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7366440.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1311210122 is about 36210.6354818581. The cubic root of 1311210122 is about 1094.5209978634.

Adding to 1311210122 its reverse (2210121131), we get a palindrome (3521331253).

The spelling of 1311210122 in words is "one billion, three hundred eleven million, two hundred ten thousand, one hundred twenty-two".