1220111199965 has 8 divisors (see below), whose sum is σ = 1673295360000. Its totient is φ = 836647679952.

The previous prime is 1220111199883. The next prime is 1220111200001. The reversal of 1220111199965 is 5699911110221.

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

It is not a de Polignac number, because 1220111199965 - 2¹⁸ = 1220110937821 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17430159965 + ... + 17430160034.

It is an arithmetic number, because the mean of its divisors is an integer number (209161920000).

Almost surely, 2^{1220111199965} is an apocalyptic number.

It is an amenable number.

1220111199965 is a deficient number, since it is larger than the sum of its proper divisors (453184160035).

1220111199965 is an equidigital number, since it uses as much as digits as its factorization.

1220111199965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34860320011.

The product of its (nonzero) digits is 87480, while the sum is 47.

The spelling of 1220111199965 in words is "one trillion, two hundred twenty billion, one hundred eleven million, one hundred ninety-nine thousand, nine hundred sixty-five".