221212000122222 has 32 divisors (see below), whose sum is σ = 478296216489600. Its totient is φ = 67968409709088.

The previous prime is 221212000122181. The next prime is 221212000122227. The reversal of 221212000122222 is 222221000212122.

It is a super-2 number, since 2×221212000122222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221212000122227) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 26222376072 + ... + 26222384507.

It is an arithmetic number, because the mean of its divisors is an integer number (14946756765300).

Almost surely, 2^{221212000122222} is an apocalyptic number.

221212000122222 is an abundant number, since it is smaller than the sum of its proper divisors (257084216367378).

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

221212000122222 is a wasteful number, since it uses less digits than its factorization.

221212000122222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52444760640.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 221212000122222 its reverse (222221000212122), we get a palindrome (443433000334344).

The spelling of 221212000122222 in words is "two hundred twenty-one trillion, two hundred twelve billion, one hundred twenty-two thousand, two hundred twenty-two".