1220012220000 has 240 divisors, whose sum is σ = 4573583384832. Its totient is φ = 278859840000.

The previous prime is 1220012219981. The next prime is 1220012220001. The reversal of 1220012220000 is 222100221.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220012220001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1032396 + ... + 1872395.

Almost surely, 2^{1220012220000} is an apocalyptic number.

1220012220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220012220000 is an abundant number, since it is smaller than the sum of its proper divisors (3353571164832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220012220000 is an equidigital number, since it uses as much as digits as its factorization.

1220012220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904831 (or 2904808 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1220012220000 its reverse (222100221), we get a palindrome (1220234320221).

The spelling of 1220012220000 in words is "one trillion, two hundred twenty billion, twelve million, two hundred twenty thousand".