20023133212 has 12 divisors (see below), whose sum is σ = 35053249000. Its totient is φ = 10007919216.

The previous prime is 20023133183. The next prime is 20023133219. The reversal of 20023133212 is 21233132002.

It is a self number, because there is not a number n which added to its sum of digits gives 20023133212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023133219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899478 + ... + 921469.

Almost surely, 2^20023133212 is an apocalyptic number.

It is an amenable number.

20023133212 is a deficient number, since it is larger than the sum of its proper divisors (15030115788).

20023133212 is a wasteful number, since it uses less digits than its factorization.

20023133212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823700 (or 1823698 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20023133212 its reverse (21233132002), we get a palindrome (41256265214).

The spelling of 20023133212 in words is "twenty billion, twenty-three million, one hundred thirty-three thousand, two hundred twelve".