30210720012 has 180 divisors, whose sum is σ = 88832973768. Its totient is φ = 8941363200.

The previous prime is 30210720011. The next prime is 30210720013. The reversal of 30210720012 is 21002701203.

It is an interprime number because it is at equal distance from previous prime (30210720011) and next prime (30210720013).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (30210720011) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1676812 + ... + 1694732.

Almost surely, 2^30210720012 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 30210720012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44416486884).

30210720012 is an abundant number, since it is smaller than the sum of its proper divisors (58622253756).

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

30210720012 is a wasteful number, since it uses less digits than its factorization.

30210720012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18002 (or 17980 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The spelling of 30210720012 in words is "thirty billion, two hundred ten million, seven hundred twenty thousand, twelve".