2221001332220 has 24 divisors (see below), whose sum is σ = 5088112143408. Its totient is φ = 807636848000.

The previous prime is 2221001332217. The next prime is 2221001332223. The reversal of 2221001332220 is 222331001222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2221001332217) and next prime (2221001332223).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2221001332192 and 2221001332201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221001332223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5047730081 + ... + 5047730520.

It is an arithmetic number, because the mean of its divisors is an integer number (212004672642).

Almost surely, 2^{2221001332220} is an apocalyptic number.

2221001332220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221001332220 is an abundant number, since it is smaller than the sum of its proper divisors (2867110811188).

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

2221001332220 is a wasteful number, since it uses less digits than its factorization.

2221001332220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10095460621 (or 10095460619 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 2221001332220 its reverse (222331001222), we get a palindrome (2443332333442).

The spelling of 2221001332220 in words is "two trillion, two hundred twenty-one billion, one million, three hundred thirty-two thousand, two hundred twenty".