221200011122222 has 64 divisors (see below), whose sum is σ = 385149535027200. Its totient is φ = 94221581040000.

The previous prime is 221200011122221. The next prime is 221200011122243. The reversal of 221200011122222 is 222221110002122.

It is a super-2 number, since 2×221200011122222² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221200011122194 and 221200011122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200011122221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42324179 + ... + 47262417.

It is an arithmetic number, because the mean of its divisors is an integer number (6017961484800).

Almost surely, 2^{221200011122222} is an apocalyptic number.

221200011122222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221200011122222 is a deficient number, since it is larger than the sum of its proper divisors (163949523904978).

221200011122222 is a wasteful number, since it uses less digits than its factorization.

221200011122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4939433.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221200011122222 its reverse (222221110002122), we get a palindrome (443421121124344).

The spelling of 221200011122222 in words is "two hundred twenty-one trillion, two hundred billion, eleven million, one hundred twenty-two thousand, two hundred twenty-two".