10311123040121 has 2 divisors, whose sum is σ = 10311123040122. Its totient is φ = 10311123040120.

The previous prime is 10311123040111. The next prime is 10311123040201. The reversal of 10311123040121 is 12104032111301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8072616325225 + 2238506714896 = 2841235^2 + 1496164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10311123040121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10311123040093 and 10311123040102.

It is not a weakly prime, because it can be changed into another prime (10311123040111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5155561520060 + 5155561520061.

It is an arithmetic number, because the mean of its divisors is an integer number (5155561520061).

Almost surely, 2^{10311123040121} is an apocalyptic number.

It is an amenable number.

10311123040121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10311123040121 is an equidigital number, since it uses as much as digits as its factorization.

10311123040121 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 20.

Adding to 10311123040121 its reverse (12104032111301), we get a palindrome (22415155151422).

The spelling of 10311123040121 in words is "ten trillion, three hundred eleven billion, one hundred twenty-three million, forty thousand, one hundred twenty-one".