20002231212 has 96 divisors (see below), whose sum is σ = 50483139840. Its totient is φ = 6140835840.

The previous prime is 20002231211. The next prime is 20002231261. The reversal of 20002231212 is 21213220002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20002231191 and 20002231200.

It is not an unprimeable number, because it can be changed into a prime (20002231211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2728512 + ... + 2735832.

It is an arithmetic number, because the mean of its divisors is an integer number (525866040).

Almost surely, 2^20002231212 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 20002231212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25241569920).

20002231212 is an abundant number, since it is smaller than the sum of its proper divisors (30480908628).

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

20002231212 is a wasteful number, since it uses less digits than its factorization.

20002231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7631 (or 7629 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20002231212 its reverse (21213220002), we get a palindrome (41215451214).

The spelling of 20002231212 in words is "twenty billion, two million, two hundred thirty-one thousand, two hundred twelve".