30021003000 has 512 divisors, whose sum is σ = 112409856000. Its totient is φ = 7389043200.

The previous prime is 30021002993. The next prime is 30021003013. The reversal of 30021003000 is 30012003.

It is a happy number.

It is a super-2 number, since 2×30021003000² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 18008167 + ... + 18009833.

It is an arithmetic number, because the mean of its divisors is an integer number (219550500).

Almost surely, 2^30021003000 is an apocalyptic number.

30021003000 is a gapful number since it is divisible by the number (30) 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 30021003000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56204928000).

30021003000 is an abundant number, since it is smaller than the sum of its proper divisors (82388853000).

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

30021003000 is a wasteful number, since it uses less digits than its factorization.

30021003000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1749 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

Adding to 30021003000 its reverse (30012003), we get a palindrome (30051015003).

The spelling of 30021003000 in words is "thirty billion, twenty-one million, three thousand".