1211210222213 has 2 divisors, whose sum is σ = 1211210222214. Its totient is φ = 1211210222212.

The previous prime is 1211210222191. The next prime is 1211210222219. The reversal of 1211210222213 is 3122220121121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1193409859489 + 17800362724 = 1092433^2 + 133418^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211210222213 - 2⁸ = 1211210221957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211210222219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605605111106 + 605605111107.

It is an arithmetic number, because the mean of its divisors is an integer number (605605111107).

Almost surely, 2^{1211210222213} is an apocalyptic number.

It is an amenable number.

1211210222213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211210222213 is an equidigital number, since it uses as much as digits as its factorization.

1211210222213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1211210222213 its reverse (3122220121121), we get a palindrome (4333430343334).

The spelling of 1211210222213 in words is "one trillion, two hundred eleven billion, two hundred ten million, two hundred twenty-two thousand, two hundred thirteen".