1101901 has 2 divisors, whose sum is σ = 1101902. Its totient is φ = 1101900.

The previous prime is 1101883. The next prime is 1101917. The reversal of 1101901 is 1091011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 980100 + 121801 = 990^2 + 349^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101901 - 2⁷ = 1101773 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550950 + 550951.

It is an arithmetic number, because the mean of its divisors is an integer number (550951).

2^1101901 is an apocalyptic number.

It is an amenable number.

1101901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101901 is an equidigital number, since it uses as much as digits as its factorization.

1101901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 1101901 is about 1049.7147231510. The cubic root of 1101901 is about 103.2874429136.

Adding to 1101901 its reverse (1091011), we get a palindrome (2192912).

It can be divided in two parts, 1101 and 901, that added together give a palindrome (2002).

The spelling of 1101901 in words is "one million, one hundred one thousand, nine hundred one".