20223211312 has 10 divisors (see below), whose sum is σ = 39182471948. Its totient is φ = 10111605648.

The previous prime is 20223211289. The next prime is 20223211319. The reversal of 20223211312 is 21311232202.

It is a super-2 number, since 2×20223211312² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20223211312.

It is not an unprimeable number, because it can be changed into a prime (20223211319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631975338 + ... + 631975369.

Almost surely, 2^20223211312 is an apocalyptic number.

It is an amenable number.

20223211312 is a deficient number, since it is larger than the sum of its proper divisors (18959260636).

20223211312 is a wasteful number, since it uses less digits than its factorization.

20223211312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263950715 (or 1263950709 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20223211312 its reverse (21311232202), we get a palindrome (41534443514).

The spelling of 20223211312 in words is "twenty billion, two hundred twenty-three million, two hundred eleven thousand, three hundred twelve".