201121102003 has 4 divisors (see below), whose sum is σ = 212951755080. Its totient is φ = 189290448928.

The previous prime is 201121101991. The next prime is 201121102069. The reversal of 201121102003 is 300201121102.

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 201121102003 - 2²¹ = 201119004851 is a prime.

It is a super-2 number, since 2×201121102003² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201121102073) 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, 5915326513 + ... + 5915326546.

It is an arithmetic number, because the mean of its divisors is an integer number (53237938770).

Almost surely, 2^201121102003 is an apocalyptic number.

201121102003 is a deficient number, since it is larger than the sum of its proper divisors (11830653077).

201121102003 is a wasteful number, since it uses less digits than its factorization.

201121102003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11830653076.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 201121102003 its reverse (300201121102), we get a palindrome (501322223105).

The spelling of 201121102003 in words is "two hundred one billion, one hundred twenty-one million, one hundred two thousand, three".