212021223301 has 2 divisors, whose sum is σ = 212021223302. Its totient is φ = 212021223300.

The previous prime is 212021223283. The next prime is 212021223329. The reversal of 212021223301 is 103322120212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113384399076 + 98636824225 = 336726^2 + 314065^2 .

It is a cyclic number.

It is not a de Polignac number, because 212021223301 - 2¹⁷ = 212021092229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021223341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010611650 + 106010611651.

It is an arithmetic number, because the mean of its divisors is an integer number (106010611651).

Almost surely, 2^212021223301 is an apocalyptic number.

It is an amenable number.

212021223301 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021223301 is an equidigital number, since it uses as much as digits as its factorization.

212021223301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212021223301 its reverse (103322120212), we get a palindrome (315343343513).

The spelling of 212021223301 in words is "two hundred twelve billion, twenty-one million, two hundred twenty-three thousand, three hundred one".