221202010101211 has 2 divisors, whose sum is σ = 221202010101212. Its totient is φ = 221202010101210.

The previous prime is 221202010101181. The next prime is 221202010101251. The reversal of 221202010101211 is 112101010202122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221202010101211 - 2⁹ = 221202010100699 is a prime.

It is not a weakly prime, because it can be changed into another prime (221202010101251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110601005050605 + 110601005050606.

It is an arithmetic number, because the mean of its divisors is an integer number (110601005050606).

Almost surely, 2^{221202010101211} is an apocalyptic number.

221202010101211 is a deficient number, since it is larger than the sum of its proper divisors (1).

221202010101211 is an equidigital number, since it uses as much as digits as its factorization.

221202010101211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221202010101211 its reverse (112101010202122), we get a palindrome (333303020303333).

The spelling of 221202010101211 in words is "two hundred twenty-one trillion, two hundred two billion, ten million, one hundred one thousand, two hundred eleven".