101223643243 has 2 divisors, whose sum is σ = 101223643244. Its totient is φ = 101223643242.

The previous prime is 101223643237. The next prime is 101223643267. The reversal of 101223643243 is 342346322101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101223643243 - 2¹⁷ = 101223512171 is a prime.

It is a super-2 number, since 2×101223643243² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101223643343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50611821621 + 50611821622.

It is an arithmetic number, because the mean of its divisors is an integer number (50611821622).

Almost surely, 2^101223643243 is an apocalyptic number.

101223643243 is a deficient number, since it is larger than the sum of its proper divisors (1).

101223643243 is an equidigital number, since it uses as much as digits as its factorization.

101223643243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 101223643243 its reverse (342346322101), we get a palindrome (443569965344).

The spelling of 101223643243 in words is "one hundred one billion, two hundred twenty-three million, six hundred forty-three thousand, two hundred forty-three".