20231212 has 12 divisors (see below), whose sum is σ = 36625680. Its totient is φ = 9766736.

The previous prime is 20231203. The next prime is 20231243. The reversal of 20231212 is 21213202.

It is a junction number, because it is equal to n+sod(n) for n = 20231192 and 20231201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87088 + ... + 87319.

It is an arithmetic number, because the mean of its divisors is an integer number (3052140).

Almost surely, 2^20231212 is an apocalyptic number.

It is an amenable number.

20231212 is a deficient number, since it is larger than the sum of its proper divisors (16394468).

20231212 is a wasteful number, since it uses less digits than its factorization.

20231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174440 (or 174438 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20231212 is about 4497.9119600099. The cubic root of 20231212 is about 272.4837663926.

Adding to 20231212 its reverse (21213202), we get a palindrome (41444414).

The spelling of 20231212 in words is "twenty million, two hundred thirty-one thousand, two hundred twelve".