12013021012 has 6 divisors (see below), whose sum is σ = 21022786778. Its totient is φ = 6006510504.

The previous prime is 12013021001. The next prime is 12013021037. The reversal of 12013021012 is 21012031021.

It can be written as a sum of positive squares in only one way, i.e., 11984994576 + 28026436 = 109476^2 + 5294^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12013020983 and 12013021001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1501627623 + ... + 1501627630.

Almost surely, 2^12013021012 is an apocalyptic number.

It is an amenable number.

12013021012 is a deficient number, since it is larger than the sum of its proper divisors (9009765766).

12013021012 is a wasteful number, since it uses less digits than its factorization.

12013021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003255257 (or 3003255255 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12013021012 its reverse (21012031021), we get a palindrome (33025052033).

The spelling of 12013021012 in words is "twelve billion, thirteen million, twenty-one thousand, twelve".