102220423 has 4 divisors (see below), whose sum is σ = 105517888. Its totient is φ = 98922960.

The previous prime is 102220403. The next prime is 102220451. The reversal of 102220423 is 324022201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324022201 = 7237 ⋅44773.

It is a cyclic number.

It is not a de Polignac number, because 102220423 - 2⁹ = 102219911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102220397 and 102220406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1648686 + ... + 1648747.

It is an arithmetic number, because the mean of its divisors is an integer number (26379472).

Almost surely, 2^102220423 is an apocalyptic number.

102220423 is a deficient number, since it is larger than the sum of its proper divisors (3297465).

102220423 is an equidigital number, since it uses as much as digits as its factorization.

102220423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297464.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 102220423 is about 10110.4116137772. The cubic root of 102220423 is about 467.5691956258.

Adding to 102220423 its reverse (324022201), we get a palindrome (426242624).

The spelling of 102220423 in words is "one hundred two million, two hundred twenty thousand, four hundred twenty-three".