21024341331312 has 160 divisors (see below), whose sum is σ = 60033551892480. Its totient is φ = 6286893500160.

The previous prime is 21024341331277. The next prime is 21024341331359. The reversal of 21024341331312 is 21313314342012.

It is a self number, because there is not a number n which added to its sum of digits gives 21024341331312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75902733 + ... + 76179219.

It is an arithmetic number, because the mean of its divisors is an integer number (375209699328).

Almost surely, 2^{21024341331312} is an apocalyptic number.

21024341331312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21024341331312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30016775946240).

21024341331312 is an abundant number, since it is smaller than the sum of its proper divisors (39009210561168).

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

21024341331312 is a wasteful number, since it uses less digits than its factorization.

21024341331312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278411 (or 278405 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 21024341331312 its reverse (21313314342012), we get a palindrome (42337655673324).

The spelling of 21024341331312 in words is "twenty-one trillion, twenty-four billion, three hundred forty-one million, three hundred thirty-one thousand, three hundred twelve".