20222231212 has 24 divisors (see below), whose sum is σ = 37011744000. Its totient is φ = 9649451856.

The previous prime is 20222231167. The next prime is 20222231243. The reversal of 20222231212 is 21213222202.

It is a self number, because there is not a number n which added to its sum of digits gives 20222231212.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 209962 + ... + 290737.

It is an arithmetic number, because the mean of its divisors is an integer number (1542156000).

Almost surely, 2^20222231212 is an apocalyptic number.

It is an amenable number.

20222231212 is a deficient number, since it is larger than the sum of its proper divisors (16789512788).

20222231212 is a wasteful number, since it uses less digits than its factorization.

20222231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501165 (or 501163 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20222231212 its reverse (21213222202), we get a palindrome (41435453414).

The spelling of 20222231212 in words is "twenty billion, two hundred twenty-two million, two hundred thirty-one thousand, two hundred twelve".