1201082123 has 4 divisors (see below), whose sum is σ = 1233543840. Its totient is φ = 1168620408.

The previous prime is 1201082119. The next prime is 1201082143. The reversal of 1201082123 is 3212801021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1201082123 - 2² = 1201082119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201082095 and 1201082104.

It is not an unprimeable number, because it can be changed into a prime (1201082143) 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, 16230803 + ... + 16230876.

It is an arithmetic number, because the mean of its divisors is an integer number (308385960).

Almost surely, 2^1201082123 is an apocalyptic number.

1201082123 is a deficient number, since it is larger than the sum of its proper divisors (32461717).

1201082123 is an equidigital number, since it uses as much as digits as its factorization.

1201082123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32461716.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1201082123 is about 34656.6317318922. The cubic root of 1201082123 is about 1062.9778974592.

Adding to 1201082123 its reverse (3212801021), we get a palindrome (4413883144).

The spelling of 1201082123 in words is "one billion, two hundred one million, eighty-two thousand, one hundred twenty-three".