123032121 has 4 divisors (see below), whose sum is σ = 164042832. Its totient is φ = 82021412.

The previous prime is 123032101. The next prime is 123032153. The reversal of 123032121 is 121230321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123032121 - 2⁶ = 123032057 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 123032121.

It is not an unprimeable number, because it can be changed into a prime (123032101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20505351 + ... + 20505356.

It is an arithmetic number, because the mean of its divisors is an integer number (41010708).

Almost surely, 2^123032121 is an apocalyptic number.

It is an amenable number.

123032121 is a deficient number, since it is larger than the sum of its proper divisors (41010711).

123032121 is an equidigital number, since it uses as much as digits as its factorization.

123032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41010710.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 123032121 is about 11091.9845383953. The cubic root of 123032121 is about 497.3622705700.

Adding to 123032121 its reverse (121230321), we get a palindrome (244262442).

The spelling of 123032121 in words is "one hundred twenty-three million, thirty-two thousand, one hundred twenty-one".