10123031121011 has 16 divisors (see below), whose sum is σ = 11054252373120. Its totient is φ = 9231270128640.

The previous prime is 10123031120947. The next prime is 10123031121059. The reversal of 10123031121011 is 11012113032101.

It is not a de Polignac number, because 10123031121011 - 2⁶ = 10123031120947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10123031121061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33518810 + ... + 33819471.

It is an arithmetic number, because the mean of its divisors is an integer number (690890773320).

Almost surely, 2^{10123031121011} is an apocalyptic number.

10123031121011 is a deficient number, since it is larger than the sum of its proper divisors (931221252109).

10123031121011 is a wasteful number, since it uses less digits than its factorization.

10123031121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67338574.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 10123031121011 its reverse (11012113032101), we get a palindrome (21135144153112).

The spelling of 10123031121011 in words is "ten trillion, one hundred twenty-three billion, thirty-one million, one hundred twenty-one thousand, eleven".