213221242122341 has 2 divisors, whose sum is σ = 213221242122342. Its totient is φ = 213221242122340.

The previous prime is 213221242122313. The next prime is 213221242122377. The reversal of 213221242122341 is 143221242122312.

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., 156358768922500 + 56862473199841 = 12504350^2 + 7540721^2 .

It is a cyclic number.

It is not a de Polignac number, because 213221242122341 - 2⁴² = 208823195611237 is a prime.

It is a super-2 number, since 2×213221242122341² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213221242122298 and 213221242122307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213221242122391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106610621061170 + 106610621061171.

It is an arithmetic number, because the mean of its divisors is an integer number (106610621061171).

Almost surely, 2^{213221242122341} is an apocalyptic number.

It is an amenable number.

213221242122341 is a deficient number, since it is larger than the sum of its proper divisors (1).

213221242122341 is an equidigital number, since it uses as much as digits as its factorization.

213221242122341 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 32.

Adding to 213221242122341 its reverse (143221242122312), we get a palindrome (356442484244653).

The spelling of 213221242122341 in words is "two hundred thirteen trillion, two hundred twenty-one billion, two hundred forty-two million, one hundred twenty-two thousand, three hundred forty-one".