13121012 has 24 divisors (see below), whose sum is σ = 23522016. Its totient is φ = 6402528.

The previous prime is 13120999. The next prime is 13121033. The reversal of 13121012 is 21012131.

13121012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13120984 and 13121002.

It is a congruent number.

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, 46223 + ... + 46505.

It is an arithmetic number, because the mean of its divisors is an integer number (980084).

Almost surely, 2^13121012 is an apocalyptic number.

It is an amenable number.

13121012 is a deficient number, since it is larger than the sum of its proper divisors (10401004).

13121012 is a wasteful number, since it uses less digits than its factorization.

13121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 525 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 13121012 is about 3622.2937484417. The cubic root of 13121012 is about 235.8608055943.

Adding to 13121012 its reverse (21012131), we get a palindrome (34133143).

It can be divided in two parts, 131 and 21012, that multiplied together give a palindrome (2752572).

The spelling of 13121012 in words is "thirteen million, one hundred twenty-one thousand, twelve".