12621012 has 24 divisors (see below), whose sum is σ = 29565312. Its totient is φ = 4190400.

The previous prime is 12620981. The next prime is 12621017. The reversal of 12621012 is 21012621.

It is a junction number, because it is equal to n+sod(n) for n = 12620982 and 12621000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12621017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1312 + ... + 5192.

It is an arithmetic number, because the mean of its divisors is an integer number (1231888).

Almost surely, 2^12621012 is an apocalyptic number.

12621012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12621012 is an abundant number, since it is smaller than the sum of its proper divisors (16944300).

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

12621012 is a wasteful number, since it uses less digits than its factorization.

12621012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4159 (or 4157 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 12621012 is about 3552.6063671620. The cubic root of 12621012 is about 232.8259551132.

Adding to 12621012 its reverse (21012621), we get a palindrome (33633633).

The spelling of 12621012 in words is "twelve million, six hundred twenty-one thousand, twelve".