122021210209 has 4 divisors (see below), whose sum is σ = 124858912816. Its totient is φ = 119183507604.

The previous prime is 122021210203. The next prime is 122021210251. The reversal of 122021210209 is 902012120221.

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 122021210209 - 2⁵ = 122021210177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122021210209.

It is not an unprimeable number, because it can be changed into a prime (122021210203) 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, 1418851239 + ... + 1418851324.

It is an arithmetic number, because the mean of its divisors is an integer number (31214728204).

Almost surely, 2^122021210209 is an apocalyptic number.

It is an amenable number.

122021210209 is a deficient number, since it is larger than the sum of its proper divisors (2837702607).

122021210209 is an equidigital number, since it uses as much as digits as its factorization.

122021210209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837702606.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 122021210209 in words is "one hundred twenty-two billion, twenty-one million, two hundred ten thousand, two hundred nine".