10551343021 has 8 divisors (see below), whose sum is σ = 10932417144. Its totient is φ = 10175316480.

The previous prime is 10551343013. The next prime is 10551343051. The reversal of 10551343021 is 12034315501.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 216384100 + 10334958921 = 14710^2 + 101661^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10551343021 - 2³ = 10551343013 is a prime.

It is a super-2 number, since 2×10551343021² (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 (10551343001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1257640 + ... + 1266001.

It is an arithmetic number, because the mean of its divisors is an integer number (1366552143).

Almost surely, 2^10551343021 is an apocalyptic number.

It is an amenable number.

10551343021 is a deficient number, since it is larger than the sum of its proper divisors (381074123).

10551343021 is a wasteful number, since it uses less digits than its factorization.

10551343021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523791.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 10551343021 its reverse (12034315501), we get a palindrome (22585658522).

The spelling of 10551343021 in words is "ten billion, five hundred fifty-one million, three hundred forty-three thousand, twenty-one".