1222122212009 has 8 divisors (see below), whose sum is σ = 1223680787712. Its totient is φ = 1220563967760.

The previous prime is 1222122211993. The next prime is 1222122212041. The reversal of 1222122212009 is 9002122212221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222122212009 - 2⁴ = 1222122211993 is a prime.

It is a super-2 number, since 2×1222122212009² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222122242009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7767647 + ... + 7923419.

It is an arithmetic number, because the mean of its divisors is an integer number (152960098464).

Almost surely, 2^{1222122212009} is an apocalyptic number.

It is an amenable number.

1222122212009 is a deficient number, since it is larger than the sum of its proper divisors (1558575703).

1222122212009 is an equidigital number, since it uses as much as digits as its factorization.

1222122212009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165727.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 1222122212009 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred twelve thousand, nine".