21221110222183 has 2 divisors, whose sum is σ = 21221110222184. Its totient is φ = 21221110222182.

The previous prime is 21221110222177. The next prime is 21221110222231. The reversal of 21221110222183 is 38122201112212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21221110222183 - 2⁹ = 21221110221671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21221110222883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610555111091 + 10610555111092.

It is an arithmetic number, because the mean of its divisors is an integer number (10610555111092).

Almost surely, 2^{21221110222183} is an apocalyptic number.

21221110222183 is a deficient number, since it is larger than the sum of its proper divisors (1).

21221110222183 is an equidigital number, since it uses as much as digits as its factorization.

21221110222183 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 28.

Adding to 21221110222183 its reverse (38122201112212), we get a palindrome (59343311334395).

The spelling of 21221110222183 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred ten million, two hundred twenty-two thousand, one hundred eighty-three".