1220112122209 has 32 divisors (see below), whose sum is σ = 1282449168000. Its totient is φ = 1159746854400.

The previous prime is 1220112122183. The next prime is 1220112122227. The reversal of 1220112122209 is 9022212110221.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220112122209 is a prime.

It is a super-2 number, since 2×1220112122209² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220112122609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125147667 + ... + 125157415.

It is an arithmetic number, because the mean of its divisors is an integer number (40076536500).

Almost surely, 2^{1220112122209} is an apocalyptic number.

It is an amenable number.

1220112122209 is a deficient number, since it is larger than the sum of its proper divisors (62337045791).

1220112122209 is a wasteful number, since it uses less digits than its factorization.

1220112122209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10321.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 1220112122209 in words is "one trillion, two hundred twenty billion, one hundred twelve million, one hundred twenty-two thousand, two hundred nine".