1210213021229 has 2 divisors, whose sum is σ = 1210213021230. Its totient is φ = 1210213021228.

The previous prime is 1210213021223. The next prime is 1210213021247. The reversal of 1210213021229 is 9221203120121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 800670619204 + 409542402025 = 894802^2 + 639955^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210213021229 - 2¹² = 1210213017133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210213021198 and 1210213021207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210213021223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605106510614 + 605106510615.

It is an arithmetic number, because the mean of its divisors is an integer number (605106510615).

Almost surely, 2^{1210213021229} is an apocalyptic number.

It is an amenable number.

1210213021229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210213021229 is an equidigital number, since it uses as much as digits as its factorization.

1210213021229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 1210213021229 in words is "one trillion, two hundred ten billion, two hundred thirteen million, twenty-one thousand, two hundred twenty-nine".