2221313022100 has 36 divisors (see below), whose sum is σ = 4834552741564. Its totient is φ = 885888622080.

The previous prime is 2221313022041. The next prime is 2221313022107. The reversal of 2221313022100 is 12203131222.

It can be written as a sum of positive squares in 6 ways, for example, as 73411734916 + 2147901287184 = 270946^2 + 1465572^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221313022107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32923467 + ... + 32990866.

Almost surely, 2^{2221313022100} is an apocalyptic number.

2221313022100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221313022100 is an abundant number, since it is smaller than the sum of its proper divisors (2613239719464).

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

2221313022100 is a wasteful number, since it uses less digits than its factorization.

2221313022100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65914684 (or 65914677 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2221313022100 its reverse (12203131222), we get a palindrome (2233516153322).

The spelling of 2221313022100 in words is "two trillion, two hundred twenty-one billion, three hundred thirteen million, twenty-two thousand, one hundred".