30120011020 has 24 divisors (see below), whose sum is σ = 69002207568. Its totient is φ = 10952731200.

The previous prime is 30120010993. The next prime is 30120011021. The reversal of 30120011020 is 2011002103.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 30120010988 and 30120011006.

It is not an unprimeable number, because it can be changed into a prime (30120011021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68454351 + ... + 68454790.

It is an arithmetic number, because the mean of its divisors is an integer number (2875091982).

Almost surely, 2^30120011020 is an apocalyptic number.

It is an amenable number.

30120011020 is an abundant number, since it is smaller than the sum of its proper divisors (38882196548).

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

30120011020 is a wasteful number, since it uses less digits than its factorization.

30120011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136909161 (or 136909159 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 30120011020 its reverse (2011002103), we get a palindrome (32131013123).

The spelling of 30120011020 in words is "thirty billion, one hundred twenty million, eleven thousand, twenty".