102223021 has 4 divisors (see below), whose sum is σ = 107603200. Its totient is φ = 96842844.

The previous prime is 102223019. The next prime is 102223067. The reversal of 102223021 is 120322201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120322201 = 2179 ⋅55219.

It is a cyclic number.

It is not a de Polignac number, because 102223021 - 2¹ = 102223019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102222992 and 102223010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102223621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2690061 + ... + 2690098.

It is an arithmetic number, because the mean of its divisors is an integer number (26900800).

Almost surely, 2^102223021 is an apocalyptic number.

It is an amenable number.

102223021 is a deficient number, since it is larger than the sum of its proper divisors (5380179).

102223021 is an equidigital number, since it uses as much as digits as its factorization.

102223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5380178.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 102223021 is about 10110.5400943768. The cubic root of 102223021 is about 467.5731567862.

Adding to 102223021 its reverse (120322201), we get a palindrome (222545222).

The spelling of 102223021 in words is "one hundred two million, two hundred twenty-three thousand, twenty-one".