212200101221 has 2 divisors, whose sum is σ = 212200101222. Its totient is φ = 212200101220.

The previous prime is 212200101209. The next prime is 212200101229. The reversal of 212200101221 is 122101002212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211940536900 + 259564321 = 460370^2 + 16111^2 .

It is a cyclic number.

It is not a de Polignac number, because 212200101221 - 2²² = 212195906917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212200101196 and 212200101205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212200101229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106100050610 + 106100050611.

It is an arithmetic number, because the mean of its divisors is an integer number (106100050611).

Almost surely, 2^212200101221 is an apocalyptic number.

It is an amenable number.

212200101221 is a deficient number, since it is larger than the sum of its proper divisors (1).

212200101221 is an equidigital number, since it uses as much as digits as its factorization.

212200101221 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 14.

Adding to 212200101221 its reverse (122101002212), we get a palindrome (334301103433).

Subtracting from 212200101221 its reverse (122101002212), we obtain a palindrome (90099099009).

The spelling of 212200101221 in words is "two hundred twelve billion, two hundred million, one hundred one thousand, two hundred twenty-one".