20322112212 has 72 divisors (see below), whose sum is σ = 52787352072. Its totient is φ = 6587308800.

The previous prime is 20322112199. The next prime is 20322112259. The reversal of 20322112212 is 21221122302.

20322112212 is a `hidden beast` number, since 20 + 322 + 112 + 212 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 14473533636 + 5848578576 = 120306^2 + 76476^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3488262 + ... + 3494082.

Almost surely, 2^20322112212 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 20322112212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26393676036).

20322112212 is an abundant number, since it is smaller than the sum of its proper divisors (32465239860).

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

20322112212 is a wasteful number, since it uses less digits than its factorization.

20322112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8489 (or 8484 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20322112212 its reverse (21221122302), we get a palindrome (41543234514).

The spelling of 20322112212 in words is "twenty billion, three hundred twenty-two million, one hundred twelve thousand, two hundred twelve".