30202122312 has 144 divisors (see below), whose sum is σ = 84745861200. Its totient is φ = 9716353920.

The previous prime is 30202122311. The next prime is 30202122323. The reversal of 30202122312 is 21322120203.

30202122312 is a `hidden beast` number, since 30 + 202 + 122 + 312 = 666.

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 (30202122311) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12911239 + ... + 12913577.

It is an arithmetic number, because the mean of its divisors is an integer number (588512925).

Almost surely, 2^30202122312 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 30202122312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42372930600).

30202122312 is an abundant number, since it is smaller than the sum of its proper divisors (54543738888).

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

30202122312 is a wasteful number, since it uses less digits than its factorization.

30202122312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556 (or 2512 counting only the distinct ones).

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

Adding to 30202122312 its reverse (21322120203), we get a palindrome (51524242515).

The spelling of 30202122312 in words is "thirty billion, two hundred two million, one hundred twenty-two thousand, three hundred twelve".