1222311222309 has 4 divisors (see below), whose sum is σ = 1629748296416. Its totient is φ = 814874148204.

The previous prime is 1222311222241. The next prime is 1222311222337. The reversal of 1222311222309 is 9032221132221.

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 not a de Polignac number, because 1222311222309 - 2⁸ = 1222311222053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222311222359) 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, 203718537049 + ... + 203718537054.

It is an arithmetic number, because the mean of its divisors is an integer number (407437074104).

Almost surely, 2^{1222311222309} is an apocalyptic number.

It is an amenable number.

1222311222309 is a deficient number, since it is larger than the sum of its proper divisors (407437074107).

1222311222309 is an equidigital number, since it uses as much as digits as its factorization.

1222311222309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407437074106.

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 1222311222309 in words is "one trillion, two hundred twenty-two billion, three hundred eleven million, two hundred twenty-two thousand, three hundred nine".