10521354133 has 4 divisors (see below), whose sum is σ = 10574762220. Its totient is φ = 10467946048.

The previous prime is 10521354127. The next prime is 10521354143. The reversal of 10521354133 is 33145312501.

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 6311031364 + 4210322769 = 79442^2 + 64887^2 .

It is a cyclic number.

It is not a de Polignac number, because 10521354133 - 2¹⁷ = 10521223061 is a prime.

It is a super-2 number, since 2×10521354133² (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 (10521354143) 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, 26703748 + ... + 26704141.

It is an arithmetic number, because the mean of its divisors is an integer number (2643690555).

Almost surely, 2^10521354133 is an apocalyptic number.

It is an amenable number.

10521354133 is a deficient number, since it is larger than the sum of its proper divisors (53408087).

10521354133 is an equidigital number, since it uses as much as digits as its factorization.

10521354133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53408086.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 10521354133 its reverse (33145312501), we get a palindrome (43666666634).

The spelling of 10521354133 in words is "ten billion, five hundred twenty-one million, three hundred fifty-four thousand, one hundred thirty-three".