221002101212222 has 24 divisors (see below), whose sum is σ = 364388976972216. Its totient is φ = 100452887150000.

The previous prime is 221002101212171. The next prime is 221002101212227. The reversal of 221002101212222 is 222212101200122.

It is a junction number, because it is equal to n+sod(n) for n = 221002101212194 and 221002101212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002101212227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2542604 + ... + 21177087.

It is an arithmetic number, because the mean of its divisors is an integer number (15182874040509).

Almost surely, 2^{221002101212222} is an apocalyptic number.

221002101212222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221002101212222 is a deficient number, since it is larger than the sum of its proper divisors (143386875759994).

221002101212222 is a wasteful number, since it uses less digits than its factorization.

221002101212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23758216 (or 23758205 counting only the distinct ones).

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

Adding to 221002101212222 its reverse (222212101200122), we get a palindrome (443214202412344).

The spelling of 221002101212222 in words is "two hundred twenty-one trillion, two billion, one hundred one million, two hundred twelve thousand, two hundred twenty-two".