1101303121 has 2 divisors, whose sum is σ = 1101303122. Its totient is φ = 1101303120.

The previous prime is 1101303103. The next prime is 1101303131. The reversal of 1101303121 is 1213031011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 776402496 + 324900625 = 27864^2 + 18025^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101303121 - 2²¹ = 1099205969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1101303131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550651560 + 550651561.

It is an arithmetic number, because the mean of its divisors is an integer number (550651561).

Almost surely, 2^1101303121 is an apocalyptic number.

It is an amenable number.

1101303121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101303121 is an equidigital number, since it uses as much as digits as its factorization.

1101303121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1101303121 is about 33185.8873770162. The cubic root of 1101303121 is about 1032.6875866842.

Adding to 1101303121 its reverse (1213031011), we get a palindrome (2314334132).

The spelling of 1101303121 in words is "one billion, one hundred one million, three hundred three thousand, one hundred twenty-one".