10813099221 has 12 divisors (see below), whose sum is σ = 15624471148. Its totient is φ = 7206171264.

The previous prime is 10813099217. The next prime is 10813099229. The reversal of 10813099221 is 12299031801.

It can be written as a sum of positive squares in 2 ways, for example, as 4234104900 + 6578994321 = 65070^2 + 81111^2 .

It is not a de Polignac number, because 10813099221 - 2² = 10813099217 is a prime.

It is a super-2 number, since 2×10813099221² (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 (10813099229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186550 + ... + 237543.

Almost surely, 2^10813099221 is an apocalyptic number.

It is an amenable number.

10813099221 is a deficient number, since it is larger than the sum of its proper divisors (4811371927).

10813099221 is a wasteful number, since it uses less digits than its factorization.

10813099221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426932 (or 426929 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The spelling of 10813099221 in words is "ten billion, eight hundred thirteen million, ninety-nine thousand, two hundred twenty-one".