10202081 has 4 divisors (see below), whose sum is σ = 10208964. Its totient is φ = 10195200.

The previous prime is 10202077. The next prime is 10202099. The reversal of 10202081 is 18020201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18020201 = 23 ⋅783487.

It can be written as a sum of positive squares in 2 ways, for example, as 5958481 + 4243600 = 2441^2 + 2060^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202081 - 2² = 10202077 is a prime.

It is a super-2 number, since 2×10202081² = 208164913461122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10202021) 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, 200 + ... + 4521.

It is an arithmetic number, because the mean of its divisors is an integer number (2552241).

Almost surely, 2^10202081 is an apocalyptic number.

It is an amenable number.

10202081 is a deficient number, since it is larger than the sum of its proper divisors (6883).

10202081 is an equidigital number, since it uses as much as digits as its factorization.

10202081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6882.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 10202081 is about 3194.0696611063. The cubic root of 10202081 is about 216.8850361192.

Adding to 10202081 its reverse (18020201), we get a palindrome (28222282).

The spelling of 10202081 in words is "ten million, two hundred two thousand, eighty-one".