243212101103 has 2 divisors, whose sum is σ = 243212101104. Its totient is φ = 243212101102.

The previous prime is 243212101087. The next prime is 243212101109. The reversal of 243212101103 is 301101212342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243212101103 - 2⁴ = 243212101087 is a prime.

It is a super-2 number, since 2×243212101103² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243212101109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121606050551 + 121606050552.

It is an arithmetic number, because the mean of its divisors is an integer number (121606050552).

Almost surely, 2^243212101103 is an apocalyptic number.

243212101103 is a deficient number, since it is larger than the sum of its proper divisors (1).

243212101103 is an equidigital number, since it uses as much as digits as its factorization.

243212101103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 243212101103 its reverse (301101212342), we get a palindrome (544313313445).

The spelling of 243212101103 in words is "two hundred forty-three billion, two hundred twelve million, one hundred one thousand, one hundred three".