122103209 has 4 divisors (see below), whose sum is σ = 123574416. Its totient is φ = 120632004.

The previous prime is 122103199. The next prime is 122103257. The reversal of 122103209 is 902301221.

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: 902301221 = 31 ⋅29106491.

It is a cyclic number.

It is not a de Polignac number, because 122103209 - 2⁴ = 122103193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122103259) 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, 735479 + ... + 735644.

It is an arithmetic number, because the mean of its divisors is an integer number (30893604).

Almost surely, 2^122103209 is an apocalyptic number.

It is an amenable number.

122103209 is a deficient number, since it is larger than the sum of its proper divisors (1471207).

122103209 is an equidigital number, since it uses as much as digits as its factorization.

122103209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471206.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 122103209 is about 11050.0320814014. The cubic root of 122103209 is about 496.1073857521.

The spelling of 122103209 in words is "one hundred twenty-two million, one hundred three thousand, two hundred nine".