102226021 has 4 divisors (see below), whose sum is σ = 102961600. Its totient is φ = 101490444.

The previous prime is 102226009. The next prime is 102226027. The reversal of 102226021 is 120622201.

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.

It is a cyclic number.

It is not a de Polignac number, because 102226021 - 2⁵ = 102225989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102225986 and 102226004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102226027) 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, 367581 + ... + 367858.

It is an arithmetic number, because the mean of its divisors is an integer number (25740400).

Almost surely, 2^102226021 is an apocalyptic number.

It is an amenable number.

102226021 is a deficient number, since it is larger than the sum of its proper divisors (735579).

102226021 is an equidigital number, since it uses as much as digits as its factorization.

102226021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735578.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 102226021 is about 10110.6884533151. The cubic root of 102226021 is about 467.5777307909.

Adding to 102226021 its reverse (120622201), we get a palindrome (222848222).

The spelling of 102226021 in words is "one hundred two million, two hundred twenty-six thousand, twenty-one".