21022120183 has 2 divisors, whose sum is σ = 21022120184. Its totient is φ = 21022120182.

The previous prime is 21022120159. The next prime is 21022120211. The reversal of 21022120183 is 38102122012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21022120183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21022120583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511060091 + 10511060092.

It is an arithmetic number, because the mean of its divisors is an integer number (10511060092).

Almost surely, 2^21022120183 is an apocalyptic number.

21022120183 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022120183 is an equidigital number, since it uses as much as digits as its factorization.

21022120183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 21022120183 its reverse (38102122012), we get a palindrome (59124242195).

The spelling of 21022120183 in words is "twenty-one billion, twenty-two million, one hundred twenty thousand, one hundred eighty-three".