2220660235520 has 144 divisors (see below), whose sum is σ = 5523541752960. Its totient is φ = 854369574912.

The previous prime is 2220660235517. The next prime is 2220660235523. The reversal of 2220660235520 is 255320660222.

It is an interprime number because it is at equal distance from previous prime (2220660235517) and next prime (2220660235523).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220660235523) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9648827 + ... + 9876293.

It is an arithmetic number, because the mean of its divisors is an integer number (38357928840).

Almost surely, 2^{2220660235520} is an apocalyptic number.

2220660235520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2220660235520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2761770876480).

2220660235520 is an abundant number, since it is smaller than the sum of its proper divisors (3302881517440).

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

2220660235520 is a wasteful number, since it uses less digits than its factorization.

2220660235520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227780 (or 227766 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 2220660235520 its reverse (255320660222), we get a palindrome (2475980895742).

The spelling of 2220660235520 in words is "two trillion, two hundred twenty billion, six hundred sixty million, two hundred thirty-five thousand, five hundred twenty".