21412331000 has 64 divisors (see below), whose sum is σ = 50175478080. Its totient is φ = 8552860800.

The previous prime is 21412330981. The next prime is 21412331023. The reversal of 21412331000 is 13321412.

It is a super-2 number, since 2×21412331000² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21412331000.

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, 712274 + ... + 741726.

It is an arithmetic number, because the mean of its divisors is an integer number (783991845).

Almost surely, 2^21412331000 is an apocalyptic number.

21412331000 is a gapful number since it is divisible by the number (20) 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 21412331000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25087739040).

21412331000 is an abundant number, since it is smaller than the sum of its proper divisors (28763147080).

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

21412331000 is a wasteful number, since it uses less digits than its factorization.

21412331000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30201 (or 30187 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21412331000 its reverse (13321412), we get a palindrome (21425652412).

The spelling of 21412331000 in words is "twenty-one billion, four hundred twelve million, three hundred thirty-one thousand".