30201223212 has 72 divisors (see below), whose sum is σ = 79181920272. Its totient is φ = 9697968000.

The previous prime is 30201223187. The next prime is 30201223219. The reversal of 30201223212 is 21232210203.

30201223212 is a `hidden beast` number, since 30 + 201 + 223 + 212 = 666.

It is a super-2 number, since 2×30201223212² (a number of 22 digits) contains 22 as substring.

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 (30201223219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22287 + ... + 246777.

Almost surely, 2^30201223212 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 30201223212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39590960136).

30201223212 is an abundant number, since it is smaller than the sum of its proper divisors (48980697060).

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

30201223212 is a wasteful number, since it uses less digits than its factorization.

30201223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224639 (or 224634 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 30201223212 its reverse (21232210203), we get a palindrome (51433433415).

The spelling of 30201223212 in words is "thirty billion, two hundred one million, two hundred twenty-three thousand, two hundred twelve".