21030213031012 has 24 divisors (see below), whose sum is σ = 36830504874240. Its totient is φ = 10507214610720.

The previous prime is 21030213030977. The next prime is 21030213031013. The reversal of 21030213031012 is 21013031203012.

It is not an unprimeable number, because it can be changed into a prime (21030213031013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28137123 + ... + 28874869.

It is an arithmetic number, because the mean of its divisors is an integer number (1534604369760).

Almost surely, 2^{21030213031012} is an apocalyptic number.

It is an amenable number.

21030213031012 is a deficient number, since it is larger than the sum of its proper divisors (15800291843228).

21030213031012 is a wasteful number, since it uses less digits than its factorization.

21030213031012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743091 (or 743089 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21030213031012 its reverse (21013031203012), we get a palindrome (42043244234024).

The spelling of 21030213031012 in words is "twenty-one trillion, thirty billion, two hundred thirteen million, thirty-one thousand, twelve".