221202220212222 has 32 divisors (see below), whose sum is σ = 472375216482048. Its totient is φ = 68888052399936.

The previous prime is 221202220212163. The next prime is 221202220212229. The reversal of 221202220212222 is 222212022202122.

It is a super-2 number, since 2×221202220212222² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221202220212192 and 221202220212201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202220212229) 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, 18638536383 + ... + 18638548250.

It is an arithmetic number, because the mean of its divisors is an integer number (14761725515064).

Almost surely, 2^{221202220212222} is an apocalyptic number.

221202220212222 is an abundant number, since it is smaller than the sum of its proper divisors (251172996269826).

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

221202220212222 is a wasteful number, since it uses less digits than its factorization.

221202220212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37277084704.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 221202220212222 its reverse (222212022202122), we get a palindrome (443414242414344).

It can be divided in two parts, 2212022202122 and 22, that multiplied together give a palindrome (48664488446684).

The spelling of 221202220212222 in words is "two hundred twenty-one trillion, two hundred two billion, two hundred twenty million, two hundred twelve thousand, two hundred twenty-two".