1220211120000 has 160 divisors (see below), whose sum is σ = 4050186556680. Its totient is φ = 325389568000.

The previous prime is 1220211119923. The next prime is 1220211120017. The reversal of 1220211120000 is 211120221.

It is a tau number, because it is divible by the number of its divisors (160).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2302107 + ... + 2782106.

Almost surely, 2^{1220211120000} is an apocalyptic number.

1220211120000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220211120000 is an abundant number, since it is smaller than the sum of its proper divisors (2829975436680).

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

1220211120000 is an frugal number, since it uses more digits than its factorization.

1220211120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5084250 (or 5084223 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1220211120000 its reverse (211120221), we get a palindrome (1220422240221).

The spelling of 1220211120000 in words is "one trillion, two hundred twenty billion, two hundred eleven million, one hundred twenty thousand".