1313212122 has 16 divisors (see below), whose sum is σ = 2918249280. Its totient is φ = 437737356.

The previous prime is 1313212099. The next prime is 1313212169. The reversal of 1313212122 is 2212123131.

1313212122 is a `hidden beast` number, since 131 + 321 + 212 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1313212095 and 1313212104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12159318 + ... + 12159425.

It is an arithmetic number, because the mean of its divisors is an integer number (182390580).

Almost surely, 2^1313212122 is an apocalyptic number.

1313212122 is an abundant number, since it is smaller than the sum of its proper divisors (1605037158).

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

1313212122 is a wasteful number, since it uses less digits than its factorization.

1313212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24318754 (or 24318748 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1313212122 is about 36238.2687500383. The cubic root of 1313212122 is about 1095.0777651658.

Adding to 1313212122 its reverse (2212123131), we get a palindrome (3525335253).

The spelling of 1313212122 in words is "one billion, three hundred thirteen million, two hundred twelve thousand, one hundred twenty-two".