30231212022 has 72 divisors (see below), whose sum is σ = 71710755480. Its totient is φ = 9128367360.

The previous prime is 30231212009. The next prime is 30231212057. The reversal of 30231212022 is 22021213203.

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

It is a junction number, because it is equal to n+sod(n) for n = 30231211986 and 30231212004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29961054 + ... + 29962062.

It is an arithmetic number, because the mean of its divisors is an integer number (995982715).

Almost surely, 2^30231212022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30231212022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35855377740).

30231212022 is an abundant number, since it is smaller than the sum of its proper divisors (41479543458).

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

30231212022 is a wasteful number, since it uses less digits than its factorization.

30231212022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806 (or 1414 counting only the distinct ones).

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

Adding to 30231212022 its reverse (22021213203), we get a palindrome (52252425225).

The spelling of 30231212022 in words is "thirty billion, two hundred thirty-one million, two hundred twelve thousand, twenty-two".