20300023212 has 144 divisors (see below), whose sum is σ = 57144971520. Its totient is φ = 5587843968.

The previous prime is 20300023193. The next prime is 20300023213. The reversal of 20300023212 is 21232000302.

It is a junction number, because it is equal to n+sod(n) for n = 20300023191 and 20300023200.

It is not an unprimeable number, because it can be changed into a prime (20300023213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2236339 + ... + 2245397.

It is an arithmetic number, because the mean of its divisors is an integer number (396840080).

Almost surely, 2^20300023212 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 20300023212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28572485760).

20300023212 is an abundant number, since it is smaller than the sum of its proper divisors (36844948308).

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

20300023212 is a wasteful number, since it uses less digits than its factorization.

20300023212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9220 (or 9211 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20300023212 its reverse (21232000302), we get a palindrome (41532023514).

The spelling of 20300023212 in words is "twenty billion, three hundred million, twenty-three thousand, two hundred twelve".