30122011020 has 24 divisors (see below), whose sum is σ = 84341631024. Its totient is φ = 8032536256.

The previous prime is 30122011013. The next prime is 30122011021. The reversal of 30122011020 is 2011022103.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 30122010987 and 30122011005.

It is not an unprimeable number, because it can be changed into a prime (30122011021) 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, 251016699 + ... + 251016818.

It is an arithmetic number, because the mean of its divisors is an integer number (3514234626).

Almost surely, 2^30122011020 is an apocalyptic number.

30122011020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30122011020 is an abundant number, since it is smaller than the sum of its proper divisors (54219620004).

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

30122011020 is a wasteful number, since it uses less digits than its factorization.

30122011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502033529 (or 502033527 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 30122011020 its reverse (2011022103), we get a palindrome (32133033123).

The spelling of 30122011020 in words is "thirty billion, one hundred twenty-two million, eleven thousand, twenty".