211222100021201 has 2 divisors, whose sum is σ = 211222100021202. Its totient is φ = 211222100021200.

The previous prime is 211222100021159. The next prime is 211222100021269. The reversal of 211222100021201 is 102120001222112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209810126310976 + 1411973710225 = 14484824^2 + 1188265^2 .

It is a cyclic number.

It is not a de Polignac number, because 211222100021201 - 2⁴² = 206824053510097 is a prime.

It is a super-2 number, since 2×211222100021201² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211222100021201.

It is not a weakly prime, because it can be changed into another prime (211222100051201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105611050010600 + 105611050010601.

It is an arithmetic number, because the mean of its divisors is an integer number (105611050010601).

Almost surely, 2^{211222100021201} is an apocalyptic number.

It is an amenable number.

211222100021201 is a deficient number, since it is larger than the sum of its proper divisors (1).

211222100021201 is an equidigital number, since it uses as much as digits as its factorization.

211222100021201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211222100021201 its reverse (102120001222112), we get a palindrome (313342101243313).

The spelling of 211222100021201 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred million, twenty-one thousand, two hundred one".