221121000212222 has 16 divisors (see below), whose sum is σ = 361950746972400. Its totient is φ = 100477216943040.

The previous prime is 221121000212219. The next prime is 221121000212311. The reversal of 221121000212222 is 222212000121122.

It is a junction number, because it is equal to n+sod(n) for n = 221121000212194 and 221121000212203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1616360447 + ... + 1616497242.

It is an arithmetic number, because the mean of its divisors is an integer number (22621921685775).

Almost surely, 2^{221121000212222} is an apocalyptic number.

221121000212222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221121000212222 is a deficient number, since it is larger than the sum of its proper divisors (140829746760178).

221121000212222 is a wasteful number, since it uses less digits than its factorization.

221121000212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3232860811.

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

Adding to 221121000212222 its reverse (222212000121122), we get a palindrome (443333000333344).

The spelling of 221121000212222 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, two hundred twelve thousand, two hundred twenty-two".