20230122221 has 2 divisors, whose sum is σ = 20230122222. Its totient is φ = 20230122220.

The previous prime is 20230122161. The next prime is 20230122239. The reversal of 20230122221 is 12222103202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18096975625 + 2133146596 = 134525^2 + 46186^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20230122221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20230122221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20230122821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10115061110 + 10115061111.

It is an arithmetic number, because the mean of its divisors is an integer number (10115061111).

Almost surely, 2^20230122221 is an apocalyptic number.

It is an amenable number.

20230122221 is a deficient number, since it is larger than the sum of its proper divisors (1).

20230122221 is an equidigital number, since it uses as much as digits as its factorization.

20230122221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20230122221 its reverse (12222103202), we get a palindrome (32452225423).

The spelling of 20230122221 in words is "twenty billion, two hundred thirty million, one hundred twenty-two thousand, two hundred twenty-one".