10546420748221 has 4 divisors (see below), whose sum is σ = 10546971753244. Its totient is φ = 10545869743200.

The previous prime is 10546420748219. The next prime is 10546420748261. The reversal of 10546420748221 is 12284702464501.

It is a happy number.

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 1975514580900 + 8570906167321 = 1405530^2 + 2927611^2 .

It is a cyclic number.

It is not a de Polignac number, because 10546420748221 - 2¹ = 10546420748219 is a prime.

It is a super-2 number, since 2×10546420748221² (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 (10546420748261) 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, 275473800 + ... + 275512081.

It is an arithmetic number, because the mean of its divisors is an integer number (2636742938311).

Almost surely, 2^{10546420748221} is an apocalyptic number.

It is an amenable number.

10546420748221 is a deficient number, since it is larger than the sum of its proper divisors (551005023).

10546420748221 is an equidigital number, since it uses as much as digits as its factorization.

10546420748221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551005022.

The product of its (nonzero) digits is 860160, while the sum is 46.

The spelling of 10546420748221 in words is "ten trillion, five hundred forty-six billion, four hundred twenty million, seven hundred forty-eight thousand, two hundred twenty-one".