222102001211221 has 16 divisors (see below), whose sum is σ = 227497919410944. Its totient is φ = 216770331423744.

The previous prime is 222102001211213. The next prime is 222102001211243. The reversal of 222102001211221 is 122112100201222.

It is a cyclic number.

It is not a de Polignac number, because 222102001211221 - 2³ = 222102001211213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222102001211021) 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, 47644740 + ... + 52098226.

It is an arithmetic number, because the mean of its divisors is an integer number (14218619963184).

Almost surely, 2^{222102001211221} is an apocalyptic number.

It is an amenable number.

222102001211221 is a deficient number, since it is larger than the sum of its proper divisors (5395918199723).

222102001211221 is an equidigital number, since it uses as much as digits as its factorization.

222102001211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4460700.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222102001211221 its reverse (122112100201222), we get a palindrome (344214101412443).

It can be divided in two parts, 222102001 and 211221, that added together give a palindrome (222313222).

The spelling of 222102001211221 in words is "two hundred twenty-two trillion, one hundred two billion, one million, two hundred eleven thousand, two hundred twenty-one".