1021466401 has 4 divisors (see below), whose sum is σ = 1022975892. Its totient is φ = 1019956912.

The previous prime is 1021466393. The next prime is 1021466431. The reversal of 1021466401 is 1046641201.

1021466401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1046641201 = 19 ⋅55086379.

It can be written as a sum of positive squares in 2 ways, for example, as 960938001 + 60528400 = 30999^2 + 7780^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021466401 - 2³ = 1021466393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021466431) 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, 753730 + ... + 755083.

It is an arithmetic number, because the mean of its divisors is an integer number (255743973).

Almost surely, 2^1021466401 is an apocalyptic number.

It is an amenable number.

1021466401 is a deficient number, since it is larger than the sum of its proper divisors (1509491).

1021466401 is an equidigital number, since it uses as much as digits as its factorization.

1021466401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509490.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1021466401 is about 31960.3879982706. The cubic root of 1021466401 is about 1007.1048682972.

The spelling of 1021466401 in words is "one billion, twenty-one million, four hundred sixty-six thousand, four hundred one".