10001201123 has 2 divisors, whose sum is σ = 10001201124. Its totient is φ = 10001201122.

The previous prime is 10001201011. The next prime is 10001201143. The reversal of 10001201123 is 32110210001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10001201123 - 2¹⁸ = 10000938979 is a prime.

It is a super-2 number, since 2×10001201123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10001201143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000600561 + 5000600562.

It is an arithmetic number, because the mean of its divisors is an integer number (5000600562).

Almost surely, 2^10001201123 is an apocalyptic number.

10001201123 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001201123 is an equidigital number, since it uses as much as digits as its factorization.

10001201123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10001201123 its reverse (32110210001), we get a palindrome (42111411124).

The spelling of 10001201123 in words is "ten billion, one million, two hundred one thousand, one hundred twenty-three".