221200120022220 has 96 divisors (see below), whose sum is σ = 691980240719040. Its totient is φ = 58660805283840.

The previous prime is 221200120022107. The next prime is 221200120022279. The reversal of 221200120022220 is 22220021002122.

221200120022220 is a `hidden beast` number, since 2 + 21 + 200 + 1 + 200 + 22 + 220 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 221200120022193 and 221200120022202.

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 31 ways as a sum of consecutive naturals, for example, 1131476437 + ... + 1131671916.

It is an arithmetic number, because the mean of its divisors is an integer number (7208127507490).

Almost surely, 2^{221200120022220} is an apocalyptic number.

221200120022220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221200120022220 is an abundant number, since it is smaller than the sum of its proper divisors (470780120696820).

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

221200120022220 is a wasteful number, since it uses less digits than its factorization.

221200120022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263148552 (or 2263148544 counting only the distinct ones).

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

Adding to 221200120022220 its reverse (22220021002122), we get a palindrome (243420141024342).

The spelling of 221200120022220 in words is "two hundred twenty-one trillion, two hundred billion, one hundred twenty million, twenty-two thousand, two hundred twenty".