20212220183 has 2 divisors, whose sum is σ = 20212220184. Its totient is φ = 20212220182.

The previous prime is 20212220173. The next prime is 20212220267. The reversal of 20212220183 is 38102221202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212220183 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212220113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106110091 + 10106110092.

It is an arithmetic number, because the mean of its divisors is an integer number (10106110092).

Almost surely, 2^20212220183 is an apocalyptic number.

20212220183 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212220183 is an equidigital number, since it uses as much as digits as its factorization.

20212220183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 20212220183 its reverse (38102221202), we get a palindrome (58314441385).

The spelling of 20212220183 in words is "twenty billion, two hundred twelve million, two hundred twenty thousand, one hundred eighty-three".