2221201003220 has 24 divisors (see below), whose sum is σ = 4682672009064. Its totient is φ = 885023277056.

The previous prime is 2221201003187. The next prime is 2221201003237. The reversal of 2221201003220 is 223001021222.

It can be written as a sum of positive squares in 4 ways, for example, as 1210255213456 + 1010945789764 = 1100116^2 + 1005458^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216064997 + ... + 216075276.

It is an arithmetic number, because the mean of its divisors is an integer number (195111333711).

Almost surely, 2^{2221201003220} is an apocalyptic number.

2221201003220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221201003220 is an abundant number, since it is smaller than the sum of its proper divisors (2461471005844).

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

2221201003220 is a wasteful number, since it uses less digits than its factorization.

2221201003220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432140539 (or 432140537 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 2221201003220 its reverse (223001021222), we get a palindrome (2444202024442).

The spelling of 2221201003220 in words is "two trillion, two hundred twenty-one billion, two hundred one million, three thousand, two hundred twenty".