101213101243 has 2 divisors, whose sum is σ = 101213101244. Its totient is φ = 101213101242.

The previous prime is 101213101211. The next prime is 101213101337. The reversal of 101213101243 is 342101312101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101213101243 - 2⁵ = 101213101211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101213101243.

It is not a weakly prime, because it can be changed into another prime (101213141243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50606550621 + 50606550622.

It is an arithmetic number, because the mean of its divisors is an integer number (50606550622).

Almost surely, 2^101213101243 is an apocalyptic number.

101213101243 is a deficient number, since it is larger than the sum of its proper divisors (1).

101213101243 is an equidigital number, since it uses as much as digits as its factorization.

101213101243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 101213101243 its reverse (342101312101), we get a palindrome (443314413344).

The spelling of 101213101243 in words is "one hundred one billion, two hundred thirteen million, one hundred one thousand, two hundred forty-three".