123012001 has 6 divisors (see below), whose sum is σ = 143095650. Its totient is φ = 105438816.

The previous prime is 123011971. The next prime is 123012037. The reversal of 123012001 is 100210321.

It can be written as a sum of positive squares in only one way, i.e., 116661601 + 6350400 = 10801^2 + 2520^2 .

It is not a de Polignac number, because 123012001 - 2⁵ = 123011969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123012601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1255176 + ... + 1255273.

It is an arithmetic number, because the mean of its divisors is an integer number (23849275).

Almost surely, 2^123012001 is an apocalyptic number.

It is an amenable number.

123012001 is a deficient number, since it is larger than the sum of its proper divisors (20083649).

123012001 is an equidigital number, since it uses as much as digits as its factorization.

123012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510463 (or 2510456 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 123012001 is about 11091.0775400770. The cubic root of 123012001 is about 497.3351571237.

Adding to 123012001 its reverse (100210321), we get a palindrome (223222322).

It can be divided in two parts, 1230 and 12001, that added together give a palindrome (13231).

The spelling of 123012001 in words is "one hundred twenty-three million, twelve thousand, one".