212021221207 has 2 divisors, whose sum is σ = 212021221208. Its totient is φ = 212021221206.

The previous prime is 212021221187. The next prime is 212021221283. The reversal of 212021221207 is 702122120212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212021221207 - 2¹⁹ = 212020696919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021221807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010610603 + 106010610604.

It is an arithmetic number, because the mean of its divisors is an integer number (106010610604).

Almost surely, 2^212021221207 is an apocalyptic number.

212021221207 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021221207 is an equidigital number, since it uses as much as digits as its factorization.

212021221207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 212021221207 its reverse (702122120212), we get a palindrome (914143341419).

The spelling of 212021221207 in words is "two hundred twelve billion, twenty-one million, two hundred twenty-one thousand, two hundred seven".