201121003 has 8 divisors (see below), whose sum is σ = 208446480. Its totient is φ = 193821600.

The previous prime is 201121001. The next prime is 201121013. The reversal of 201121003 is 300121102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201121003 - 2¹ = 201121001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201121001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9928 + ... + 22378.

It is an arithmetic number, because the mean of its divisors is an integer number (26055810).

Almost surely, 2^201121003 is an apocalyptic number.

201121003 is a deficient number, since it is larger than the sum of its proper divisors (7325477).

201121003 is a wasteful number, since it uses less digits than its factorization.

201121003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13037.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 201121003 is about 14181.7136834728. The cubic root of 201121003 is about 585.8941234943.

Adding to 201121003 its reverse (300121102), we get a palindrome (501242105).

Subtracting 201121003 from its reverse (300121102), we obtain a palindrome (99000099).

It can be divided in two parts, 20112 and 1003, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 201121003 in words is "two hundred one million, one hundred twenty-one thousand, three".