20023211212 has 12 divisors (see below), whose sum is σ = 35050457176. Its totient is φ = 10008794880.

The previous prime is 20023211183. The next prime is 20023211239. The reversal of 20023211212 is 21211232002.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 686613 + ... + 715180.

Almost surely, 2^20023211212 is an apocalyptic number.

It is an amenable number.

20023211212 is a deficient number, since it is larger than the sum of its proper divisors (15027245964).

20023211212 is a wasteful number, since it uses less digits than its factorization.

20023211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405368 (or 1405366 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20023211212 its reverse (21211232002), we get a palindrome (41234443214).

The spelling of 20023211212 in words is "twenty billion, twenty-three million, two hundred eleven thousand, two hundred twelve".