1201322103 has 4 divisors (see below), whose sum is σ = 1601762808. Its totient is φ = 800881400.

The previous prime is 1201322093. The next prime is 1201322117. The reversal of 1201322103 is 3012231021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3012231021 = 3 ⋅1004077007.

It is a cyclic number.

It is not a de Polignac number, because 1201322103 - 2²⁰ = 1200273527 is a prime.

It is a super-3 number, since 3×1201322103³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201322173) 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, 200220348 + ... + 200220353.

It is an arithmetic number, because the mean of its divisors is an integer number (400440702).

Almost surely, 2^1201322103 is an apocalyptic number.

1201322103 is a deficient number, since it is larger than the sum of its proper divisors (400440705).

1201322103 is an equidigital number, since it uses as much as digits as its factorization.

1201322103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400440704.

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

The square root of 1201322103 is about 34660.0938111829. The cubic root of 1201322103 is about 1063.0486881912.

Adding to 1201322103 its reverse (3012231021), we get a palindrome (4213553124).

The spelling of 1201322103 in words is "one billion, two hundred one million, three hundred twenty-two thousand, one hundred three".