21016601104 has 20 divisors (see below), whose sum is σ = 40902270976. Its totient is φ = 10461176352.

The previous prime is 21016601093. The next prime is 21016601129. The reversal of 21016601104 is 40110661012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2941584 + ... + 2948719.

Almost surely, 2^21016601104 is an apocalyptic number.

It is an amenable number.

21016601104 is a deficient number, since it is larger than the sum of its proper divisors (19885669872).

21016601104 is a wasteful number, since it uses less digits than its factorization.

21016601104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5890534 (or 5890528 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 21016601104 in words is "twenty-one billion, sixteen million, six hundred one thousand, one hundred four".