20221222312 has 32 divisors (see below), whose sum is σ = 40134362400. Its totient is φ = 9534942144.

The previous prime is 20221222291. The next prime is 20221222313. The reversal of 20221222312 is 21322212202.

It is a self number, because there is not a number n which added to its sum of digits gives 20221222312.

It is not an unprimeable number, because it can be changed into a prime (20221222313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1003518 + ... + 1023469.

It is an arithmetic number, because the mean of its divisors is an integer number (1254198825).

Almost surely, 2^20221222312 is an apocalyptic number.

It is an amenable number.

20221222312 is a deficient number, since it is larger than the sum of its proper divisors (19913140088).

20221222312 is a wasteful number, since it uses less digits than its factorization.

20221222312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027065 (or 2027061 counting only the distinct ones).

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

Adding to 20221222312 its reverse (21322212202), we get a palindrome (41543434514).

The spelling of 20221222312 in words is "twenty billion, two hundred twenty-one million, two hundred twenty-two thousand, three hundred twelve".