1222220122009 has 4 divisors (see below), whose sum is σ = 1248224805504. Its totient is φ = 1196215438516.

The previous prime is 1222220121989. The next prime is 1222220122033. The reversal of 1222220122009 is 9002210222221.

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 1222220122009 - 2⁹ = 1222220121497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222220122609) 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, 13002341677 + ... + 13002341770.

It is an arithmetic number, because the mean of its divisors is an integer number (312056201376).

Almost surely, 2^{1222220122009} is an apocalyptic number.

It is an amenable number.

1222220122009 is a deficient number, since it is larger than the sum of its proper divisors (26004683495).

1222220122009 is an equidigital number, since it uses as much as digits as its factorization.

1222220122009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26004683494.

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 1222220122009 in words is "one trillion, two hundred twenty-two billion, two hundred twenty million, one hundred twenty-two thousand, nine".