22012021222 has 4 divisors (see below), whose sum is σ = 33018031836. Its totient is φ = 11006010610.

The previous prime is 22012021211. The next prime is 22012021259. The reversal of 22012021222 is 22212021022.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 22012021196 and 22012021205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5503005304 + ... + 5503005307.

It is an arithmetic number, because the mean of its divisors is an integer number (8254507959).

Almost surely, 2^22012021222 is an apocalyptic number.

22012021222 is a deficient number, since it is larger than the sum of its proper divisors (11006010614).

22012021222 is a wasteful number, since it uses less digits than its factorization.

22012021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11006010613.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22012021222 its reverse (22212021022), we get a palindrome (44224042244).

The spelling of 22012021222 in words is "twenty-two billion, twelve million, twenty-one thousand, two hundred twenty-two".