221001211202222 has 32 divisors (see below), whose sum is σ = 361892218798080. Its totient is φ = 100384588075680.

The previous prime is 221001211202171. The next prime is 221001211202227. The reversal of 221001211202222 is 222202112100122.

It is a junction number, because it is equal to n+sod(n) for n = 221001211202194 and 221001211202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221001211202227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362726483 + ... + 363335249.

It is an arithmetic number, because the mean of its divisors is an integer number (11309131837440).

Almost surely, 2^{221001211202222} is an apocalyptic number.

221001211202222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221001211202222 is a deficient number, since it is larger than the sum of its proper divisors (140891007595858).

221001211202222 is a wasteful number, since it uses less digits than its factorization.

221001211202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620336.

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

Adding to 221001211202222 its reverse (222202112100122), we get a palindrome (443203323302344).

The spelling of 221001211202222 in words is "two hundred twenty-one trillion, one billion, two hundred eleven million, two hundred two thousand, two hundred twenty-two".