1220002019999 has 4 divisors (see below), whose sum is σ = 1394288022864. Its totient is φ = 1045716017136.

The previous prime is 1220002019993. The next prime is 1220002020037. The reversal of 1220002019999 is 9999102000221.

It is a happy number.

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

It is not a de Polignac number, because 1220002019999 - 2³⁶ = 1151282543263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220002019993) 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, 87143001422 + ... + 87143001435.

It is an arithmetic number, because the mean of its divisors is an integer number (348572005716).

Almost surely, 2^{1220002019999} is an apocalyptic number.

1220002019999 is a deficient number, since it is larger than the sum of its proper divisors (174286002865).

1220002019999 is an equidigital number, since it uses as much as digits as its factorization.

1220002019999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174286002864.

The product of its (nonzero) digits is 52488, while the sum is 44.

The spelling of 1220002019999 in words is "one trillion, two hundred twenty billion, two million, nineteen thousand, nine hundred ninety-nine".