20221223123 has 2 divisors, whose sum is σ = 20221223124. Its totient is φ = 20221223122.

The previous prime is 20221223117. The next prime is 20221223137. The reversal of 20221223123 is 32132212202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20221223123 - 2⁴ = 20221223107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20221223095 and 20221223104.

It is not a weakly prime, because it can be changed into another prime (20221223023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110611561 + 10110611562.

It is an arithmetic number, because the mean of its divisors is an integer number (10110611562).

Almost surely, 2^20221223123 is an apocalyptic number.

20221223123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221223123 is an equidigital number, since it uses as much as digits as its factorization.

20221223123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20221223123 its reverse (32132212202), we get a palindrome (52353435325).

The spelling of 20221223123 in words is "twenty billion, two hundred twenty-one million, two hundred twenty-three thousand, one hundred twenty-three".