201121103 has 2 divisors, whose sum is σ = 201121104. Its totient is φ = 201121102.

The previous prime is 201121093. The next prime is 201121111. The reversal of 201121103 is 301121102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201121103 - 2¹⁶ = 201055567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201121133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100560551 + 100560552.

It is an arithmetic number, because the mean of its divisors is an integer number (100560552).

Almost surely, 2^201121103 is an apocalyptic number.

201121103 is a deficient number, since it is larger than the sum of its proper divisors (1).

201121103 is an equidigital number, since it uses as much as digits as its factorization.

201121103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 201121103 is about 14181.7172091394. The cubic root of 201121103 is about 585.8942205990.

Adding to 201121103 its reverse (301121102), we get a palindrome (502242205).

Subtracting 201121103 from its reverse (301121102), we obtain a palindrome (99999999).

The spelling of 201121103 in words is "two hundred one million, one hundred twenty-one thousand, one hundred three".