22222330221 has 32 divisors (see below), whose sum is σ = 37724924160. Its totient is φ = 11317469184.

The previous prime is 22222330183. The next prime is 22222330223. The reversal of 22222330221 is 12203322222.

It is not a de Polignac number, because 22222330221 - 2¹³ = 22222322029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222330223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1395540 + ... + 1411373.

It is an arithmetic number, because the mean of its divisors is an integer number (1178903880).

Almost surely, 2^22222330221 is an apocalyptic number.

22222330221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22222330221 is a deficient number, since it is larger than the sum of its proper divisors (15502593939).

22222330221 is a wasteful number, since it uses less digits than its factorization.

22222330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806965.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 22222330221 its reverse (12203322222), we get a palindrome (34425652443).

The spelling of 22222330221 in words is "twenty-two billion, two hundred twenty-two million, three hundred thirty thousand, two hundred twenty-one".