22122121002173 has 2 divisors, whose sum is σ = 22122121002174. Its totient is φ = 22122121002172.

The previous prime is 22122121002139. The next prime is 22122121002211. The reversal of 22122121002173 is 37120012122122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13757890160569 + 8364230841604 = 3709163^2 + 2892098^2 .

It is a cyclic number.

It is not a de Polignac number, because 22122121002173 - 2⁸ = 22122121001917 is a prime.

It is a super-3 number, since 3×22122121002173³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22122121092173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061060501086 + 11061060501087.

It is an arithmetic number, because the mean of its divisors is an integer number (11061060501087).

Almost surely, 2^{22122121002173} is an apocalyptic number.

It is an amenable number.

22122121002173 is a deficient number, since it is larger than the sum of its proper divisors (1).

22122121002173 is an equidigital number, since it uses as much as digits as its factorization.

22122121002173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 22122121002173 its reverse (37120012122122), we get a palindrome (59242133124295).

The spelling of 22122121002173 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred twenty-one million, two thousand, one hundred seventy-three".