21046444101 has 36 divisors (see below), whose sum is σ = 32412181152. Its totient is φ = 13135083984.

The previous prime is 21046444049. The next prime is 21046444109. The reversal of 21046444101 is 10144464012.

21046444101 is a `hidden beast` number, since 2 + 1 + 0 + 4 + 644 + 4 + 10 + 1 = 666.

It is not a de Polignac number, because 21046444101 - 2⁷ = 21046443973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21046444109) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 434250 + ... + 480276.

Almost surely, 2^21046444101 is an apocalyptic number.

It is an amenable number.

21046444101 is a deficient number, since it is larger than the sum of its proper divisors (11365737051).

21046444101 is a wasteful number, since it uses less digits than its factorization.

21046444101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46150 (or 46100 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The spelling of 21046444101 in words is "twenty-one billion, forty-six million, four hundred forty-four thousand, one hundred one".