1222216172213 has 2 divisors, whose sum is σ = 1222216172214. Its totient is φ = 1222216172212.

The previous prime is 1222216172209. The next prime is 1222216172251. The reversal of 1222216172213 is 3122716122221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1207181243524 + 15034928689 = 1098718^2 + 122617^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222216172213 - 2² = 1222216172209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1222216172213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222216172413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611108086106 + 611108086107.

It is an arithmetic number, because the mean of its divisors is an integer number (611108086107).

Almost surely, 2^{1222216172213} is an apocalyptic number.

It is an amenable number.

1222216172213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222216172213 is an equidigital number, since it uses as much as digits as its factorization.

1222216172213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 32.

The spelling of 1222216172213 in words is "one trillion, two hundred twenty-two billion, two hundred sixteen million, one hundred seventy-two thousand, two hundred thirteen".