10343240001221 has 8 divisors (see below), whose sum is σ = 10529653887000. Its totient is φ = 10158386064640.

The previous prime is 10343240001181. The next prime is 10343240001223. The reversal of 10343240001221 is 12210004234301.

It can be written as a sum of positive squares in 4 ways, for example, as 2603550625 + 10340636450596 = 51025^2 + 3215686^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10343240001221 is a prime.

It is a super-2 number, since 2×10343240001221² (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 (10343240001223) 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, 389973920 + ... + 390000441.

It is an arithmetic number, because the mean of its divisors is an integer number (1316206735875).

Almost surely, 2^{10343240001221} is an apocalyptic number.

It is an amenable number.

10343240001221 is a deficient number, since it is larger than the sum of its proper divisors (186413885779).

10343240001221 is an equidigital number, since it uses as much as digits as its factorization.

10343240001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779974599.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 10343240001221 its reverse (12210004234301), we get a palindrome (22553244235522).

The spelling of 10343240001221 in words is "ten trillion, three hundred forty-three billion, two hundred forty million, one thousand, two hundred twenty-one".