10120323421 has 4 divisors (see below), whose sum is σ = 10898809852. Its totient is φ = 9341836992.

The previous prime is 10120323379. The next prime is 10120323439. The reversal of 10120323421 is 12432302101.

It is a happy number.

10120323421 is digitally balanced in base 3, 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: 12432302101 = 5417 ⋅2295053.

It can be written as a sum of positive squares in 2 ways, for example, as 5659552900 + 4460770521 = 75230^2 + 66789^2 .

It is a cyclic number.

It is not a de Polignac number, because 10120323421 - 2¹³ = 10120315229 is a prime.

It is a super-2 number, since 2×10120323421² (a number of 21 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 (10120323481) 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, 389243196 + ... + 389243221.

It is an arithmetic number, because the mean of its divisors is an integer number (2724702463).

Almost surely, 2^10120323421 is an apocalyptic number.

It is an amenable number.

10120323421 is a deficient number, since it is larger than the sum of its proper divisors (778486431).

10120323421 is an equidigital number, since it uses as much as digits as its factorization.

10120323421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778486430.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 10120323421 its reverse (12432302101), we get a palindrome (22552625522).

The spelling of 10120323421 in words is "ten billion, one hundred twenty million, three hundred twenty-three thousand, four hundred twenty-one".