1200202103 has 4 divisors (see below), whose sum is σ = 1200674040. Its totient is φ = 1199730168.

The previous prime is 1200202097. The next prime is 1200202109. The reversal of 1200202103 is 3012020021.

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: 3012020021 = 199 ⋅15135779.

It is an interprime number because it is at equal distance from previous prime (1200202097) and next prime (1200202109).

It is a cyclic number.

It is not a de Polignac number, because 1200202103 - 2¹² = 1200198007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200202109) 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, 232133 + ... + 237246.

It is an arithmetic number, because the mean of its divisors is an integer number (300168510).

Almost surely, 2^1200202103 is an apocalyptic number.

1200202103 is a deficient number, since it is larger than the sum of its proper divisors (471937).

1200202103 is an equidigital number, since it uses as much as digits as its factorization.

1200202103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471936.

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

The square root of 1200202103 is about 34643.9331341001. The cubic root of 1200202103 is about 1062.7182231907.

Adding to 1200202103 its reverse (3012020021), we get a palindrome (4212222124).

The spelling of 1200202103 in words is "one billion, two hundred million, two hundred two thousand, one hundred three".