12020123 has 4 divisors (see below), whose sum is σ = 12434640. Its totient is φ = 11605608.

The previous prime is 12020119. The next prime is 12020131. The reversal of 12020123 is 32102021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32102021 = 7 ⋅4586003.

It is a cyclic number.

It is not a de Polignac number, because 12020123 - 2² = 12020119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12020623) 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, 207215 + ... + 207272.

It is an arithmetic number, because the mean of its divisors is an integer number (3108660).

Almost surely, 2^12020123 is an apocalyptic number.

12020123 is a deficient number, since it is larger than the sum of its proper divisors (414517).

12020123 is an equidigital number, since it uses as much as digits as its factorization.

12020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414516.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 12020123 is about 3467.0049033712. The cubic root of 12020123 is about 229.0707497368.

Adding to 12020123 its reverse (32102021), we get a palindrome (44122144).

The spelling of 12020123 in words is "twelve million, twenty thousand, one hundred twenty-three".