801021001311221 has 8 divisors (see below), whose sum is σ = 813589612796160. Its totient is φ = 788531687060128.

The previous prime is 801021001311203. The next prime is 801021001311259. The reversal of 801021001311221 is 122113100120108.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 801021001311221 - 2²² = 801020997116917 is a prime.

It is a super-2 number, since 2×801021001311221² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801021001311281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19824288101 + ... + 19824328506.

It is an arithmetic number, because the mean of its divisors is an integer number (101698701599520).

Almost surely, 2^{801021001311221} is an apocalyptic number.

It is an amenable number.

801021001311221 is a deficient number, since it is larger than the sum of its proper divisors (12568611484939).

801021001311221 is a wasteful number, since it uses less digits than its factorization.

801021001311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39648616923.

The product of its (nonzero) digits is 192, while the sum is 23.

Adding to 801021001311221 its reverse (122113100120108), we get a palindrome (923134101431329).

The spelling of 801021001311221 in words is "eight hundred one trillion, twenty-one billion, one million, three hundred eleven thousand, two hundred twenty-one".