21041015020412 has 12 divisors (see below), whose sum is σ = 37516526782056. Its totient is φ = 10322007368400.

The previous prime is 21041015020309. The next prime is 21041015020429. The reversal of 21041015020412 is 21402051014012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49625035214 + ... + 49625035637.

It is an arithmetic number, because the mean of its divisors is an integer number (3126377231838).

Almost surely, 2^{21041015020412} is an apocalyptic number.

It is an amenable number.

21041015020412 is a deficient number, since it is larger than the sum of its proper divisors (16475511761644).

21041015020412 is a wasteful number, since it uses less digits than its factorization.

21041015020412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99250070908 (or 99250070906 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 21041015020412 its reverse (21402051014012), we get a palindrome (42443066034424).

The spelling of 21041015020412 in words is "twenty-one trillion, forty-one billion, fifteen million, twenty thousand, four hundred twelve".