102211321 has 4 divisors (see below), whose sum is σ = 102290832. Its totient is φ = 102131812.

The previous prime is 102211303. The next prime is 102211331. The reversal of 102211321 is 123112201.

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 102211321 - 2¹⁵ = 102178553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102211331) 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 in 3 ways as a sum of consecutive naturals, for example, 37795 + ... + 40408.

It is an arithmetic number, because the mean of its divisors is an integer number (25572708).

Almost surely, 2^102211321 is an apocalyptic number.

It is an amenable number.

102211321 is a deficient number, since it is larger than the sum of its proper divisors (79511).

102211321 is an equidigital number, since it uses as much as digits as its factorization.

102211321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79510.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 102211321 is about 10109.9614737149. The cubic root of 102211321 is about 467.5553173126. Note that the first 3 decimals are identical.

Adding to 102211321 its reverse (123112201), we get a palindrome (225323522).

The spelling of 102211321 in words is "one hundred two million, two hundred eleven thousand, three hundred twenty-one".