30541202120 has 128 divisors (see below), whose sum is σ = 80833697280. Its totient is φ = 10238592000.

The previous prime is 30541202051. The next prime is 30541202123. The reversal of 30541202120 is 2120214503.

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 = 30541202092 and 30541202101.

It is not an unprimeable number, because it can be changed into a prime (30541202123) 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, 5207990 + ... + 5213850.

It is an arithmetic number, because the mean of its divisors is an integer number (631513260).

Almost surely, 2^30541202120 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 30541202120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40416848640).

30541202120 is an abundant number, since it is smaller than the sum of its proper divisors (50292495160).

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

30541202120 is a wasteful number, since it uses less digits than its factorization.

30541202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6807 (or 6803 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 30541202120 its reverse (2120214503), we get a palindrome (32661416623).

The spelling of 30541202120 in words is "thirty billion, five hundred forty-one million, two hundred two thousand, one hundred twenty".