1331212124 has 48 divisors (see below), whose sum is σ = 2791514880. Its totient is φ = 548317440.

The previous prime is 1331212121. The next prime is 1331212139. The reversal of 1331212124 is 4212121331.

It is a junction number, because it is equal to n+sod(n) for n = 1331212096 and 1331212105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331212121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15389 + ... + 53844.

It is an arithmetic number, because the mean of its divisors is an integer number (58156560).

Almost surely, 2^1331212124 is an apocalyptic number.

It is an amenable number.

1331212124 is an abundant number, since it is smaller than the sum of its proper divisors (1460302756).

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

1331212124 is a wasteful number, since it uses less digits than its factorization.

1331212124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69290 (or 69288 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 1331212124 is about 36485.7797504726. The cubic root of 1331212124 is about 1100.0584332595.

Adding to 1331212124 its reverse (4212121331), we get a palindrome (5543333455).

The spelling of 1331212124 in words is "one billion, three hundred thirty-one million, two hundred twelve thousand, one hundred twenty-four".