22201222212173 has 2 divisors, whose sum is σ = 22201222212174. Its totient is φ = 22201222212172.

The previous prime is 22201222212161. The next prime is 22201222212271. The reversal of 22201222212173 is 37121222210222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21580651668004 + 620570544169 = 4645498^2 + 787763^2 .

It is a cyclic number.

It is not a de Polignac number, because 22201222212173 - 2⁶ = 22201222212109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22201222232173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100611106086 + 11100611106087.

It is an arithmetic number, because the mean of its divisors is an integer number (11100611106087).

Almost surely, 2^{22201222212173} is an apocalyptic number.

It is an amenable number.

22201222212173 is a deficient number, since it is larger than the sum of its proper divisors (1).

22201222212173 is an equidigital number, since it uses as much as digits as its factorization.

22201222212173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

Adding to 22201222212173 its reverse (37121222210222), we get a palindrome (59322444422395).

The spelling of 22201222212173 in words is "twenty-two trillion, two hundred one billion, two hundred twenty-two million, two hundred twelve thousand, one hundred seventy-three".