201222121213 has 2 divisors, whose sum is σ = 201222121214. Its totient is φ = 201222121212.

The previous prime is 201222121189. The next prime is 201222121229. The reversal of 201222121213 is 312121222102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129120204889 + 72101916324 = 359333^2 + 268518^2 .

It is a cyclic number.

It is not a de Polignac number, because 201222121213 - 2²⁹ = 200685250301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201222121253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100611060606 + 100611060607.

It is an arithmetic number, because the mean of its divisors is an integer number (100611060607).

Almost surely, 2^201222121213 is an apocalyptic number.

It is an amenable number.

201222121213 is a deficient number, since it is larger than the sum of its proper divisors (1).

201222121213 is an equidigital number, since it uses as much as digits as its factorization.

201222121213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 201222121213 its reverse (312121222102), we get a palindrome (513343343315).

The spelling of 201222121213 in words is "two hundred one billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred thirteen".