1011424021 has 2 divisors, whose sum is σ = 1011424022. Its totient is φ = 1011424020.

The previous prime is 1011424019. The next prime is 1011424033. The reversal of 1011424021 is 1204241101.

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., 834400996 + 177023025 = 28886^2 + 13305^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011424021 - 2¹ = 1011424019 is a prime.

Together with 1011424019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1011423986 and 1011424004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011424081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505712010 + 505712011.

It is an arithmetic number, because the mean of its divisors is an integer number (505712011).

Almost surely, 2^1011424021 is an apocalyptic number.

It is an amenable number.

1011424021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011424021 is an equidigital number, since it uses as much as digits as its factorization.

1011424021 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 1011424021 is about 31802.8932803291. The cubic root of 1011424021 is about 1003.7935974202.

Adding to 1011424021 its reverse (1204241101), we get a palindrome (2215665122).

The spelling of 1011424021 in words is "one billion, eleven million, four hundred twenty-four thousand, twenty-one".