20221222 has 20 divisors (see below), whose sum is σ = 35393436. Its totient is φ = 8664180.

The previous prime is 20221213. The next prime is 20221231. The reversal of 20221222 is 22212202.

It is an interprime number because it is at equal distance from previous prime (20221213) and next prime (20221231).

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 9 ways as a sum of consecutive naturals, for example, 2697 + ... + 6907.

Almost surely, 2^20221222 is an apocalyptic number.

20221222 is a deficient number, since it is larger than the sum of its proper divisors (15172214).

20221222 is an frugal number, since it uses more digits than its factorization.

20221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241 (or 4220 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 20221222 is about 4496.8013075963. The cubic root of 20221222 is about 272.4389089548.

Adding to 20221222 its reverse (22212202), we get a palindrome (42433424).

The spelling of 20221222 in words is "twenty million, two hundred twenty-one thousand, two hundred twenty-two".