30213013212 has 36 divisors (see below), whose sum is σ = 76641674200. Its totient is φ = 10035414432.

The previous prime is 30213013177. The next prime is 30213013219. The reversal of 30213013212 is 21231031203.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30213013219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1472587 + ... + 1492962.

Almost surely, 2^30213013212 is an apocalyptic number.

It is an amenable number.

30213013212 is an abundant number, since it is smaller than the sum of its proper divisors (46428660988).

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

30213013212 is a wasteful number, since it uses less digits than its factorization.

30213013212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965842 (or 2965837 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 30213013212 its reverse (21231031203), we get a palindrome (51444044415).

The spelling of 30213013212 in words is "thirty billion, two hundred thirteen million, thirteen thousand, two hundred twelve".