1220221110109 has 4 divisors (see below), whose sum is σ = 1220223680704. Its totient is φ = 1220218539516.

The previous prime is 1220221110041. The next prime is 1220221110139. The reversal of 1220221110109 is 9010111220221.

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 1220221110109 - 2⁷ = 1220221109981 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 1220221110109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220221110139) 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, 342987 + ... + 1599400.

It is an arithmetic number, because the mean of its divisors is an integer number (305055920176).

Almost surely, 2^{1220221110109} is an apocalyptic number.

It is an amenable number.

1220221110109 is a deficient number, since it is larger than the sum of its proper divisors (2570595).

1220221110109 is an equidigital number, since it uses as much as digits as its factorization.

1220221110109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570594.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 1220221110109 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, one hundred ten thousand, one hundred nine".