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10021101 = 33340367

10021101 has 4 divisors (see below), whose sum is σ = 13361472. Its totient is φ = 6680732.

The previous prime is 10021093. The next prime is 10021111. The reversal of 10021101 is 10112001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10112001 = 33370667.

It is a cyclic number.

It is not a de Polignac number, because 10021101 - 23 = 10021093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10021101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1670181 + ... + 1670186.

It is an arithmetic number, because the mean of its divisors is an integer number (3340368).

Almost surely, 210021101 is an apocalyptic number.

It is an amenable number.

10021101 is a deficient number, since it is larger than the sum of its proper divisors (3340371).

10021101 is an equidigital number, since it uses as much as digits as its factorization.

10021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340370.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 10021101 is about 3165.6122630543. The cubic root of 10021101 is about 215.5948982974.

Adding to 10021101 its reverse (10112001), we get a palindrome (20133102).

Multiplying 10021101 by its reverse (10112001), we get a palindrome (101333383333101).

The spelling of 10021101 in words is "ten million, twenty-one thousand, one hundred one".

Divisors: 1 3 3340367 10021101