221212013332222 has 16 divisors (see below), whose sum is σ = 361991157030000. Its totient is φ = 100548731127040.

The previous prime is 221212013332217. The next prime is 221212013332229. The reversal of 221212013332222 is 222233310212122.

It is a super-2 number, since 2×221212013332222² (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 (221212013332229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108165097 + ... + 110191252.

It is an arithmetic number, because the mean of its divisors is an integer number (22624447314375).

Almost surely, 2^{221212013332222} is an apocalyptic number.

221212013332222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221212013332222 is a deficient number, since it is larger than the sum of its proper divisors (140779143697778).

221212013332222 is a wasteful number, since it uses less digits than its factorization.

221212013332222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218402411.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 221212013332222 its reverse (222233310212122), we get a palindrome (443445323544344).

The spelling of 221212013332222 in words is "two hundred twenty-one trillion, two hundred twelve billion, thirteen million, three hundred thirty-two thousand, two hundred twenty-two".