1021360401 has 16 divisors (see below), whose sum is σ = 1531360320. Its totient is φ = 672701760.

The previous prime is 1021360399. The next prime is 1021360421. The reversal of 1021360401 is 1040631201.

It is a happy number.

It is not a de Polignac number, because 1021360401 - 2¹ = 1021360399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1021360421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225640 + ... + 230121.

It is an arithmetic number, because the mean of its divisors is an integer number (95710020).

Almost surely, 2^1021360401 is an apocalyptic number.

It is an amenable number.

1021360401 is a deficient number, since it is larger than the sum of its proper divisors (509999919).

1021360401 is an equidigital number, since it uses as much as digits as its factorization.

1021360401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455853 (or 455847 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1021360401 is about 31958.7296524752. The cubic root of 1021360401 is about 1007.0700305356.

Adding to 1021360401 its reverse (1040631201), we get a palindrome (2061991602).

The spelling of 1021360401 in words is "one billion, twenty-one million, three hundred sixty thousand, four hundred one".