12220011212173 has 2 divisors, whose sum is σ = 12220011212174. Its totient is φ = 12220011212172.

The previous prime is 12220011212089. The next prime is 12220011212177. The reversal of 12220011212173 is 37121211002221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11674535907204 + 545475304969 = 3416802^2 + 738563^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12220011212173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12220011212177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6110005606086 + 6110005606087.

It is an arithmetic number, because the mean of its divisors is an integer number (6110005606087).

Almost surely, 2^{12220011212173} is an apocalyptic number.

It is an amenable number.

12220011212173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12220011212173 is an equidigital number, since it uses as much as digits as its factorization.

12220011212173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 12220011212173 its reverse (37121211002221), we get a palindrome (49341222214394).

The spelling of 12220011212173 in words is "twelve trillion, two hundred twenty billion, eleven million, two hundred twelve thousand, one hundred seventy-three".