221202212105222 has 16 divisors (see below), whose sum is σ = 344876649817392. Its totient is φ = 106315358208480.

The previous prime is 221202212105221. The next prime is 221202212105243. The reversal of 221202212105222 is 222501212202122.

It is a junction number, because it is equal to n+sod(n) for n = 221202212105191 and 221202212105200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202212105221) 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, 18007337729 + ... + 18007350012.

It is an arithmetic number, because the mean of its divisors is an integer number (21554790613587).

Almost surely, 2^{221202212105222} is an apocalyptic number.

221202212105222 is a deficient number, since it is larger than the sum of its proper divisors (123674437712170).

221202212105222 is a wasteful number, since it uses less digits than its factorization.

221202212105222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36014687863.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 221202212105222 its reverse (222501212202122), we get a palindrome (443703424307344).

The spelling of 221202212105222 in words is "two hundred twenty-one trillion, two hundred two billion, two hundred twelve million, one hundred five thousand, two hundred twenty-two".