2221220220000 has 120 divisors (see below), whose sum is σ = 7286046762456. Its totient is φ = 592325376000.

The previous prime is 2221220219993. The next prime is 2221220220029. The reversal of 2221220220000 is 220221222.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18450169 + ... + 18570168.

Almost surely, 2^{2221220220000} is an apocalyptic number.

2221220220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221220220000 is an abundant number, since it is smaller than the sum of its proper divisors (5064826542456).

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

2221220220000 is an equidigital number, since it uses as much as digits as its factorization.

2221220220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37020370 (or 37020347 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 2221220220000 its reverse (220221222), we get a palindrome (2221440441222).

The spelling of 2221220220000 in words is "two trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twenty thousand".