1101442421 has 2 divisors, whose sum is σ = 1101442422. Its totient is φ = 1101442420.

The previous prime is 1101442403. The next prime is 1101442439. The reversal of 1101442421 is 1242441011.

It is a balanced prime because it is at equal distance from previous prime (1101442403) and next prime (1101442439).

It can be written as a sum of positive squares in only one way, i.e., 1097596900 + 3845521 = 33130^2 + 1961^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101442421 - 2⁶ = 1101442357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1101442393 and 1101442402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101442021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550721210 + 550721211.

It is an arithmetic number, because the mean of its divisors is an integer number (550721211).

Almost surely, 2^1101442421 is an apocalyptic number.

It is an amenable number.

1101442421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101442421 is an equidigital number, since it uses as much as digits as its factorization.

1101442421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1101442421 is about 33187.9860943685. The cubic root of 1101442421 is about 1032.7311252018.

Adding to 1101442421 its reverse (1242441011), we get a palindrome (2343883432).

It can be divided in two parts, 11014 and 42421, that added together give a palindrome (53435).

The spelling of 1101442421 in words is "one billion, one hundred one million, four hundred forty-two thousand, four hundred twenty-one".