10402334423221 has 4 divisors (see below), whose sum is σ = 11202513994252. Its totient is φ = 9602154852192.

The previous prime is 10402334423197. The next prime is 10402334423287. The reversal of 10402334423221 is 12232443320401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5517730530225 + 4884603892996 = 2348985^2 + 2210114^2 .

It is a cyclic number.

It is not a de Polignac number, because 10402334423221 - 2¹⁵ = 10402334390453 is a prime.

It is a super-2 number, since 2×10402334423221² (a number of 27 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 (10402334423291) 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, 400089785496 + ... + 400089785521.

It is an arithmetic number, because the mean of its divisors is an integer number (2800628498563).

Almost surely, 2^{10402334423221} is an apocalyptic number.

It is an amenable number.

10402334423221 is a deficient number, since it is larger than the sum of its proper divisors (800179571031).

10402334423221 is an equidigital number, since it uses as much as digits as its factorization.

10402334423221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800179571030.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 10402334423221 its reverse (12232443320401), we get a palindrome (22634777743622).

The spelling of 10402334423221 in words is "ten trillion, four hundred two billion, three hundred thirty-four million, four hundred twenty-three thousand, two hundred twenty-one".