2001202103 has 4 divisors (see below), whose sum is σ = 2002741608. Its totient is φ = 1999662600.

The previous prime is 2001202067. The next prime is 2001202109. The reversal of 2001202103 is 3012021002.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001202103 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 (2001202109) 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, 767801 + ... + 770402.

It is an arithmetic number, because the mean of its divisors is an integer number (500685402).

Almost surely, 2^2001202103 is an apocalyptic number.

2001202103 is a deficient number, since it is larger than the sum of its proper divisors (1539505).

2001202103 is a wasteful number, since it uses less digits than its factorization.

2001202103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539504.

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

The square root of 2001202103 is about 44734.7974512012. The cubic root of 2001202103 is about 1260.1734251504.

Adding to 2001202103 its reverse (3012021002), we get a palindrome (5013223105).

The spelling of 2001202103 in words is "two billion, one million, two hundred two thousand, one hundred three".