30021241320020 has 96 divisors (see below), whose sum is σ = 66059686522368. Its totient is φ = 11438576658432.

The previous prime is 30021241319933. The next prime is 30021241320023. The reversal of 30021241320020 is 2002314212003.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30021241319974 and 30021241320001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30021241320023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 345596432 + ... + 345683288.

It is an arithmetic number, because the mean of its divisors is an integer number (688121734608).

Almost surely, 2^{30021241320020} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30021241320020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33029843261184).

30021241320020 is an abundant number, since it is smaller than the sum of its proper divisors (36038445202348).

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

30021241320020 is a wasteful number, since it uses less digits than its factorization.

30021241320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90009 (or 90007 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 30021241320020 its reverse (2002314212003), we get a palindrome (32023555532023).

The spelling of 30021241320020 in words is "thirty trillion, twenty-one billion, two hundred forty-one million, three hundred twenty thousand, twenty".