1101343121 has 4 divisors (see below), whose sum is σ = 1139320500. Its totient is φ = 1063365744.

The previous prime is 1101343097. The next prime is 1101343129. The reversal of 1101343121 is 1213431011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 815902096 + 285441025 = 28564^2 + 16895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101343121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1101343121.

It is not an unprimeable number, because it can be changed into a prime (1101343129) 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, 18988646 + ... + 18988703.

It is an arithmetic number, because the mean of its divisors is an integer number (284830125).

Almost surely, 2^1101343121 is an apocalyptic number.

It is an amenable number.

1101343121 is a deficient number, since it is larger than the sum of its proper divisors (37977379).

1101343121 is an equidigital number, since it uses as much as digits as its factorization.

1101343121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37977378.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1101343121 is about 33186.4900373631. The cubic root of 1101343121 is about 1032.7000891468.

Adding to 1101343121 its reverse (1213431011), we get a palindrome (2314774132).

The spelling of 1101343121 in words is "one billion, one hundred one million, three hundred forty-three thousand, one hundred twenty-one".