10821816202 has 4 divisors (see below), whose sum is σ = 16232724306. Its totient is φ = 5410908100.

The previous prime is 10821816199. The next prime is 10821816283. The reversal of 10821816202 is 20261812801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5686517281 + 5135298921 = 75409^2 + 71661^2 .

It is a super-2 number, since 2×10821816202² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2705454049 + ... + 2705454052.

Almost surely, 2^10821816202 is an apocalyptic number.

10821816202 is a deficient number, since it is larger than the sum of its proper divisors (5410908104).

10821816202 is an equidigital number, since it uses as much as digits as its factorization.

10821816202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5410908103.

The product of its (nonzero) digits is 3072, while the sum is 31.

The spelling of 10821816202 in words is "ten billion, eight hundred twenty-one million, eight hundred sixteen thousand, two hundred two".