221222000010220 has 36 divisors (see below), whose sum is σ = 510638881020912. Its totient is φ = 80444363639200.

The previous prime is 221222000010169. The next prime is 221222000010239. The reversal of 221222000010220 is 22010000222122.

It is a junction number, because it is equal to n+sod(n) for n = 221222000010194 and 221222000010203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45707022376 + ... + 45707027215.

It is an arithmetic number, because the mean of its divisors is an integer number (14184413361692).

Almost surely, 2^{221222000010220} is an apocalyptic number.

221222000010220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221222000010220 is an abundant number, since it is smaller than the sum of its proper divisors (289416881010692).

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

221222000010220 is a wasteful number, since it uses less digits than its factorization.

221222000010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91414049622 (or 91414049609 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221222000010220 its reverse (22010000222122), we get a palindrome (243232000232342).

The spelling of 221222000010220 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, ten thousand, two hundred twenty".