1101442021 has 2 divisors, whose sum is σ = 1101442022. Its totient is φ = 1101442020.

The previous prime is 1101442003. The next prime is 1101442079. The reversal of 1101442021 is 1202441011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 624500100 + 476941921 = 24990^2 + 21839^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101442021 - 2⁷ = 1101441893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101441986 and 1101442004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1101442421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550721010 + 550721011.

It is an arithmetic number, because the mean of its divisors is an integer number (550721011).

Almost surely, 2^1101442021 is an apocalyptic number.

It is an amenable number.

1101442021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101442021 is an equidigital number, since it uses as much as digits as its factorization.

1101442021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1101442021 is about 33187.9800680909. The cubic root of 1101442021 is about 1032.7310001862.

Adding to 1101442021 its reverse (1202441011), we get a palindrome (2303883032).

It can be divided in two parts, 11014 and 42021, that added together give a palindrome (53035).

The spelling of 1101442021 in words is "one billion, one hundred one million, four hundred forty-two thousand, twenty-one".