10545422121 has 24 divisors (see below), whose sum is σ = 16588320840. Its totient is φ = 6416568576.

The previous prime is 10545422119. The next prime is 10545422131. The reversal of 10545422121 is 12122454501.

It is a happy number.

10545422121 is a `hidden beast` number, since 105 + 4 + 542 + 2 + 12 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 587577600 + 9957844521 = 24240^2 + 99789^2 .

It is not a de Polignac number, because 10545422121 - 2¹ = 10545422119 is a prime.

It is a super-2 number, since 2×10545422121² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10545422131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 495946 + ... + 516771.

It is an arithmetic number, because the mean of its divisors is an integer number (691180035).

Almost surely, 2^10545422121 is an apocalyptic number.

It is an amenable number.

10545422121 is a deficient number, since it is larger than the sum of its proper divisors (6042898719).

10545422121 is a wasteful number, since it uses less digits than its factorization.

10545422121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012825 (or 1012822 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 10545422121 its reverse (12122454501), we get a palindrome (22667876622).

The spelling of 10545422121 in words is "ten billion, five hundred forty-five million, four hundred twenty-two thousand, one hundred twenty-one".