20123303212 has 6 divisors (see below), whose sum is σ = 35215780628. Its totient is φ = 10061651604.

The previous prime is 20123303197. The next prime is 20123303227. The reversal of 20123303212 is 21230332102.

It is an interprime number because it is at equal distance from previous prime (20123303197) and next prime (20123303227).

It is a self number, because there is not a number n which added to its sum of digits gives 20123303212.

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 as a sum of consecutive naturals, namely, 2515412898 + ... + 2515412905.

Almost surely, 2^20123303212 is an apocalyptic number.

It is an amenable number.

20123303212 is a deficient number, since it is larger than the sum of its proper divisors (15092477416).

20123303212 is a wasteful number, since it uses less digits than its factorization.

20123303212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030825807 (or 5030825805 counting only the distinct ones).

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

Adding to 20123303212 its reverse (21230332102), we get a palindrome (41353635314).

The spelling of 20123303212 in words is "twenty billion, one hundred twenty-three million, three hundred three thousand, two hundred twelve".