1310121012 has 48 divisors (see below), whose sum is σ = 3158547840. Its totient is φ = 422335872.

The previous prime is 1310120993. The next prime is 1310121017. The reversal of 1310121012 is 2101210131.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310121017) 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, 65314 + ... + 82982.

It is an arithmetic number, because the mean of its divisors is an integer number (65803080).

Almost surely, 2^1310121012 is an apocalyptic number.

1310121012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1310121012 is an abundant number, since it is smaller than the sum of its proper divisors (1848426828).

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

1310121012 is a wasteful number, since it uses less digits than its factorization.

1310121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17880 (or 17878 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1310121012 is about 36195.5938202428. The cubic root of 1310121012 is about 1094.2178722895.

Adding to 1310121012 its reverse (2101210131), we get a palindrome (3411331143).

It can be divided in two parts, 1 and 310121012, that added together give a palindrome (310121013).

The spelling of 1310121012 in words is "one billion, three hundred ten million, one hundred twenty-one thousand, twelve".