22022011223212 has 96 divisors (see below), whose sum is σ = 51745656259584. Its totient is φ = 7919754566400.

The previous prime is 22022011223161. The next prime is 22022011223269. The reversal of 22022011223212 is 21232211022022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167553762 + ... + 167685142.

It is an arithmetic number, because the mean of its divisors is an integer number (539017252704).

Almost surely, 2^{22022011223212} is an apocalyptic number.

22022011223212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22022011223212 is an abundant number, since it is smaller than the sum of its proper divisors (29723645036372).

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

22022011223212 is a wasteful number, since it uses less digits than its factorization.

22022011223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173279 (or 173277 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 22022011223212 its reverse (21232211022022), we get a palindrome (43254222245234).

The spelling of 22022011223212 in words is "twenty-two trillion, twenty-two billion, eleven million, two hundred twenty-three thousand, two hundred twelve".