102021102000 has 240 divisors, whose sum is σ = 356651672832. Its totient is φ = 27180748800.

The previous prime is 102021101999. The next prime is 102021102041. The reversal of 102021102000 is 201120201.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28204192 + ... + 28207808.

Almost surely, 2^102021102000 is an apocalyptic number.

102021102000 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 102021102000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178325836416).

102021102000 is an abundant number, since it is smaller than the sum of its proper divisors (254630570832).

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

102021102000 is a wasteful number, since it uses less digits than its factorization.

102021102000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5213 (or 5194 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 102021102000 its reverse (201120201), we get a palindrome (102222222201).

The spelling of 102021102000 in words is "one hundred two billion, twenty-one million, one hundred two thousand".