22022220312 has 48 divisors (see below), whose sum is σ = 60098833080. Its totient is φ = 7284700800.

The previous prime is 22022220299. The next prime is 22022220347. The reversal of 22022220312 is 21302222022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 1157989 + ... + 1176852.

Almost surely, 2^22022220312 is an apocalyptic number.

It is an amenable number.

22022220312 is an abundant number, since it is smaller than the sum of its proper divisors (38076612768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22022220312 is a wasteful number, since it uses less digits than its factorization.

22022220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2334984 (or 2334977 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 22022220312 its reverse (21302222022), we get a palindrome (43324442334).

The spelling of 22022220312 in words is "twenty-two billion, twenty-two million, two hundred twenty thousand, three hundred twelve".