30011212020 has 48 divisors (see below), whose sum is σ = 86929032960. Its totient is φ = 7727024256.

The previous prime is 30011211977. The next prime is 30011212027. The reversal of 30011212020 is 2021211003.

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 = 30011211987 and 30011212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30011212027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8622172 + ... + 8625651.

It is an arithmetic number, because the mean of its divisors is an integer number (1811021520).

Almost surely, 2^30011212020 is an apocalyptic number.

30011212020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30011212020 is an abundant number, since it is smaller than the sum of its proper divisors (56917820940).

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

30011212020 is a wasteful number, since it uses less digits than its factorization.

30011212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17247864 (or 17247862 counting only the distinct ones).

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

Adding to 30011212020 its reverse (2021211003), we get a palindrome (32032423023).

The spelling of 30011212020 in words is "thirty billion, eleven million, two hundred twelve thousand, twenty".