21041040240312 has 64 divisors (see below), whose sum is σ = 52919080945920. Its totient is φ = 6971485075968.

The previous prime is 21041040240301. The next prime is 21041040240323. The reversal of 21041040240312 is 21304204014012.

It is an interprime number because it is at equal distance from previous prime (21041040240301) and next prime (21041040240323).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234090403 + ... + 234180269.

It is an arithmetic number, because the mean of its divisors is an integer number (826860639780).

Almost surely, 2^{21041040240312} is an apocalyptic number.

It is an amenable number.

21041040240312 is an abundant number, since it is smaller than the sum of its proper divisors (31878040705608).

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

21041040240312 is a wasteful number, since it uses less digits than its factorization.

21041040240312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148460 (or 148456 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21041040240312 its reverse (21304204014012), we get a palindrome (42345244254324).

The spelling of 21041040240312 in words is "twenty-one trillion, forty-one billion, forty million, two hundred forty thousand, three hundred twelve".