10521534440101 has 4 divisors (see below), whose sum is σ = 10557444114252. Its totient is φ = 10485624765952.

The previous prime is 10521534440071. The next prime is 10521534440119. The reversal of 10521534440101 is 10104443512501.

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 9863205049476 + 658329390625 = 3140574^2 + 811375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10521534440101 is a prime.

It is a super-2 number, since 2×10521534440101² (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 (10521534444101) 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, 17954836636 + ... + 17954837221.

It is an arithmetic number, because the mean of its divisors is an integer number (2639361028563).

Almost surely, 2^{10521534440101} is an apocalyptic number.

It is an amenable number.

10521534440101 is a deficient number, since it is larger than the sum of its proper divisors (35909674151).

10521534440101 is an equidigital number, since it uses as much as digits as its factorization.

10521534440101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35909674150.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 10521534440101 its reverse (10104443512501), we get a palindrome (20625977952602).

The spelling of 10521534440101 in words is "ten trillion, five hundred twenty-one billion, five hundred thirty-four million, four hundred forty thousand, one hundred one".