221021022220200 has 144 divisors (see below), whose sum is σ = 766206210556800. Its totient is φ = 57037683139200.

The previous prime is 221021022220183. The next prime is 221021022220291. The reversal of 221021022220200 is 2022220120122.

221021022220200 is a `hidden beast` number, since 2 + 2 + 10 + 210 + 22 + 220 + 200 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1980419310 + ... + 1980530909.

It is an arithmetic number, because the mean of its divisors is an integer number (5320876462200).

Almost surely, 2^{221021022220200} is an apocalyptic number.

221021022220200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221021022220200 is an abundant number, since it is smaller than the sum of its proper divisors (545185188336600).

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

221021022220200 is a wasteful number, since it uses less digits than its factorization.

221021022220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3960950272 (or 3960950260 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 221021022220200 its reverse (2022220120122), we get a palindrome (223043242340322).

The spelling of 221021022220200 in words is "two hundred twenty-one trillion, twenty-one billion, twenty-two million, two hundred twenty thousand, two hundred".