102021320000 has 140 divisors (see below), whose sum is σ = 256549952736. Its totient is φ = 40232640000.

The previous prime is 102021319997. The next prime is 102021320003. The reversal of 102021320000 is 23120201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (102021319997) and next prime (102021320003).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021320003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2822039 + ... + 2857961.

Almost surely, 2^102021320000 is an apocalyptic number.

102021320000 is a gapful number since it is divisible by the number (10) 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 102021320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128274976368).

102021320000 is an abundant number, since it is smaller than the sum of its proper divisors (154528632736).

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

102021320000 is an frugal number, since it uses more digits than its factorization.

102021320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36026 (or 36001 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 102021320000 its reverse (23120201), we get a palindrome (102044440201).

The spelling of 102021320000 in words is "one hundred two billion, twenty-one million, three hundred twenty thousand".