1220120111219 has 4 divisors (see below), whose sum is σ = 1220419678296. Its totient is φ = 1219820544144.

The previous prime is 1220120111213. The next prime is 1220120111261. The reversal of 1220120111219 is 9121110210221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220120111219 is a prime.

It is a super-2 number, since 2×1220120111219² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220120111194 and 1220120111203.

It is not an unprimeable number, because it can be changed into a prime (1220120111213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149777429 + ... + 149785574.

It is an arithmetic number, because the mean of its divisors is an integer number (305104919574).

Almost surely, 2^{1220120111219} is an apocalyptic number.

1220120111219 is a deficient number, since it is larger than the sum of its proper divisors (299567077).

1220120111219 is an equidigital number, since it uses as much as digits as its factorization.

1220120111219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299567076.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 1220120111219 in words is "one trillion, two hundred twenty billion, one hundred twenty million, one hundred eleven thousand, two hundred nineteen".