20323102212 has 216 divisors, whose sum is σ = 63264801600. Its totient is φ = 5475399552.

The previous prime is 20323102157. The next prime is 20323102213. The reversal of 20323102212 is 21220132302.

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 (20323102213) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2195089 + ... + 2204327.

It is an arithmetic number, because the mean of its divisors is an integer number (292892600).

Almost surely, 2^20323102212 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 20323102212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31632400800).

20323102212 is an abundant number, since it is smaller than the sum of its proper divisors (42941699388).

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

20323102212 is a wasteful number, since it uses less digits than its factorization.

20323102212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9335 (or 9323 counting only the distinct ones).

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

Adding to 20323102212 its reverse (21220132302), we get a palindrome (41543234514).

The spelling of 20323102212 in words is "twenty billion, three hundred twenty-three million, one hundred two thousand, two hundred twelve".