101140243121 has 2 divisors, whose sum is σ = 101140243122. Its totient is φ = 101140243120.

The previous prime is 101140243103. The next prime is 101140243133. The reversal of 101140243121 is 121342041101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86178060721 + 14962182400 = 293561^2 + 122320^2 .

It is an emirp because it is prime and its reverse (121342041101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101140243121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101140243093 and 101140243102.

It is not a weakly prime, because it can be changed into another prime (101140243621) 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, 50570121560 + 50570121561.

It is an arithmetic number, because the mean of its divisors is an integer number (50570121561).

Almost surely, 2^101140243121 is an apocalyptic number.

It is an amenable number.

101140243121 is a deficient number, since it is larger than the sum of its proper divisors (1).

101140243121 is an equidigital number, since it uses as much as digits as its factorization.

101140243121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 101140243121 its reverse (121342041101), we get a palindrome (222482284222).

The spelling of 101140243121 in words is "one hundred one billion, one hundred forty million, two hundred forty-three thousand, one hundred twenty-one".