30021021030 has 256 divisors, whose sum is σ = 97653620736. Its totient is φ = 5703851520.

The previous prime is 30021021029. The next prime is 30021021071. The reversal of 30021021030 is 3012012003.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30021020997 and 30021021015.

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, 3208539 + ... + 3217881.

It is an arithmetic number, because the mean of its divisors is an integer number (381459456).

Almost surely, 2^30021021030 is an apocalyptic number.

30021021030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30021021030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48826810368).

30021021030 is an abundant number, since it is smaller than the sum of its proper divisors (67632599706).

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

30021021030 is a wasteful number, since it uses less digits than its factorization.

30021021030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9491.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 30021021030 its reverse (3012012003), we get a palindrome (33033033033).

The spelling of 30021021030 in words is "thirty billion, twenty-one million, twenty-one thousand, thirty".