213443444100220 has 24 divisors (see below), whose sum is σ = 449027380471824. Its totient is φ = 85225730428416.

The previous prime is 213443444100197. The next prime is 213443444100239. The reversal of 213443444100220 is 22001444344312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9477939189 + ... + 9477961708.

It is an arithmetic number, because the mean of its divisors is an integer number (18709474186326).

Almost surely, 2^{213443444100220} is an apocalyptic number.

213443444100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213443444100220 is an abundant number, since it is smaller than the sum of its proper divisors (235583936371604).

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

213443444100220 is a wasteful number, since it uses less digits than its factorization.

213443444100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18955901469 (or 18955901467 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 213443444100220 its reverse (22001444344312), we get a palindrome (235444888444532).

The spelling of 213443444100220 in words is "two hundred thirteen trillion, four hundred forty-three billion, four hundred forty-four million, one hundred thousand, two hundred twenty".