4123123113021 has 32 divisors (see below), whose sum is σ = 6112408780800. Its totient is φ = 2451330161280.

The previous prime is 4123123112993. The next prime is 4123123113023. The reversal of 4123123113021 is 1203113213214.

It is not a de Polignac number, because 4123123113021 - 2³⁸ = 3848245206077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4123123112982 and 4123123113000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4123123113023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5153991 + ... + 5899988.

It is an arithmetic number, because the mean of its divisors is an integer number (191012774400).

Almost surely, 2^{4123123113021} is an apocalyptic number.

It is an amenable number.

4123123113021 is a deficient number, since it is larger than the sum of its proper divisors (1989285667779).

4123123113021 is a wasteful number, since it uses less digits than its factorization.

4123123113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11054209.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 4123123113021 its reverse (1203113213214), we get a palindrome (5326236326235).

The spelling of 4123123113021 in words is "four trillion, one hundred twenty-three billion, one hundred twenty-three million, one hundred thirteen thousand, twenty-one".