221243220313300 has 18 divisors (see below), whose sum is σ = 480097788080078. Its totient is φ = 88497288125280.

The previous prime is 221243220313277. The next prime is 221243220313321. The reversal of 221243220313300 is 3313022342122.

It can be written as a sum of positive squares in 3 ways, for example, as 48335921379216 + 172907298934084 = 6952404^2 + 13149422^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1106216101467 + ... + 1106216101666.

Almost surely, 2^{221243220313300} is an apocalyptic number.

221243220313300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221243220313300 is an abundant number, since it is smaller than the sum of its proper divisors (258854567766778).

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

221243220313300 is a wasteful number, since it uses less digits than its factorization.

221243220313300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212432203147 (or 2212432203140 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 221243220313300 its reverse (3313022342122), we get a palindrome (224556242655422).

The spelling of 221243220313300 in words is "two hundred twenty-one trillion, two hundred forty-three billion, two hundred twenty million, three hundred thirteen thousand, three hundred".