123121031033 has 32 divisors (see below), whose sum is σ = 165351013632. Its totient is φ = 88536268800.

The previous prime is 123121031023. The next prime is 123121031051. The reversal of 123121031033 is 330130121321.

It is not a de Polignac number, because 123121031033 - 2⁴ = 123121031017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123121030996 and 123121031014.

It is not an unprimeable number, because it can be changed into a prime (123121031023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4664513 + ... + 4690833.

It is an arithmetic number, because the mean of its divisors is an integer number (5167219176).

Almost surely, 2^123121031033 is an apocalyptic number.

123121031033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123121031033 is a deficient number, since it is larger than the sum of its proper divisors (42229982599).

123121031033 is a wasteful number, since it uses less digits than its factorization.

123121031033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31025.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 123121031033 its reverse (330130121321), we get a palindrome (453251152354).

The spelling of 123121031033 in words is "one hundred twenty-three billion, one hundred twenty-one million, thirty-one thousand, thirty-three".