21076101 has 12 divisors (see below), whose sum is σ = 30485728. Its totient is φ = 14031144.

The previous prime is 21076093. The next prime is 21076129. The reversal of 21076101 is 10167012.

It is not a de Polignac number, because 21076101 - 2³ = 21076093 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21076801) 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, 8466 + ... + 10668.

Almost surely, 2^21076101 is an apocalyptic number.

It is an amenable number.

21076101 is a deficient number, since it is larger than the sum of its proper divisors (9409627).

21076101 is a wasteful number, since it uses less digits than its factorization.

21076101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3272 (or 3269 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 21076101 is about 4590.8714858946. The cubic root of 21076101 is about 276.2252807813.

The spelling of 21076101 in words is "twenty-one million, seventy-six thousand, one hundred one".