21334668000 has 192 divisors, whose sum is σ = 70091723520. Its totient is φ = 5673024000.

The previous prime is 21334667993. The next prime is 21334668023. The reversal of 21334668000 is 86643312.

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, 4545655 + ... + 4550345.

It is an arithmetic number, because the mean of its divisors is an integer number (365061060).

Almost surely, 2^21334668000 is an apocalyptic number.

21334668000 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 21334668000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35045861760).

21334668000 is an abundant number, since it is smaller than the sum of its proper divisors (48757055520).

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

21334668000 is a wasteful number, since it uses less digits than its factorization.

21334668000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5098 (or 5080 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 21334668000 in words is "twenty-one billion, three hundred thirty-four million, six hundred sixty-eight thousand".