221323101200020 has 24 divisors (see below), whose sum is σ = 479771367763968. Its totient is φ = 85673458528800.

The previous prime is 221323101199961. The next prime is 221323101200111. The reversal of 221323101200020 is 20002101323122.

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, 178486371316 + ... + 178486372555.

It is an arithmetic number, because the mean of its divisors is an integer number (19990473656832).

Almost surely, 2^{221323101200020} is an apocalyptic number.

221323101200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221323101200020 is an abundant number, since it is smaller than the sum of its proper divisors (258448266563948).

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

221323101200020 is a wasteful number, since it uses less digits than its factorization.

221323101200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356972743911 (or 356972743909 counting only the distinct ones).

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

Adding to 221323101200020 its reverse (20002101323122), we get a palindrome (241325202523142).

The spelling of 221323101200020 in words is "two hundred twenty-one trillion, three hundred twenty-three billion, one hundred one million, two hundred thousand, twenty".