10221081 has 8 divisors (see below), whose sum is σ = 14676480. Its totient is φ = 6289872.

The previous prime is 10221077. The next prime is 10221083. The reversal of 10221081 is 18012201.

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

It is not a de Polignac number, because 10221081 - 2² = 10221077 is a prime.

It is a super-2 number, since 2×10221081² = 208940993617122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10221081.

It is not an unprimeable number, because it can be changed into a prime (10221083) 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, 131001 + ... + 131078.

It is an arithmetic number, because the mean of its divisors is an integer number (1834560).

Almost surely, 2^10221081 is an apocalyptic number.

It is an amenable number.

10221081 is a deficient number, since it is larger than the sum of its proper divisors (4455399).

10221081 is a wasteful number, since it uses less digits than its factorization.

10221081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262095.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 10221081 is about 3197.0425395981. The cubic root of 10221081 is about 217.0195923330.

Adding to 10221081 its reverse (18012201), we get a palindrome (28233282).

The spelling of 10221081 in words is "ten million, two hundred twenty-one thousand, eighty-one".