2121696000 has 432 divisors, whose sum is σ = 7834488480. Its totient is φ = 551116800.

The previous prime is 2121695987. The next prime is 2121696001. The reversal of 2121696000 is 6961212.

It is not an unprimeable number, because it can be changed into a prime (2121696001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15263931 + ... + 15264069.

It is an arithmetic number, because the mean of its divisors is an integer number (18135390).

Almost surely, 2^2121696000 is an apocalyptic number.

2121696000 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 2121696000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3917244240).

2121696000 is an abundant number, since it is smaller than the sum of its proper divisors (5712792480).

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

2121696000 is a wasteful number, since it uses less digits than its factorization.

2121696000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 2121696000 is about 46061.8714339745. The cubic root of 2121696000 is about 1284.9741348435.

The spelling of 2121696000 in words is "two billion, one hundred twenty-one million, six hundred ninety-six thousand".