102210109 has 4 divisors (see below), whose sum is σ = 103649760. Its totient is φ = 100770460.

The previous prime is 102210107. The next prime is 102210127. The reversal of 102210109 is 901012201.

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: 901012201 = 193 ⋅4668457.

It is a cyclic number.

It is not a de Polignac number, because 102210109 - 2¹ = 102210107 is a prime.

It is a super-3 number, since 3×102210109³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102210092 and 102210101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102210107) 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, 719719 + ... + 719860.

It is an arithmetic number, because the mean of its divisors is an integer number (25912440).

Almost surely, 2^102210109 is an apocalyptic number.

It is an amenable number.

102210109 is a deficient number, since it is larger than the sum of its proper divisors (1439651).

102210109 is an equidigital number, since it uses as much as digits as its factorization.

102210109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439650.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 102210109 is about 10109.9015326560. The cubic root of 102210109 is about 467.5534692482.

The spelling of 102210109 in words is "one hundred two million, two hundred ten thousand, one hundred nine".