21010672011 has 32 divisors (see below), whose sum is σ = 33958656000. Its totient is φ = 11280162816.

The previous prime is 21010671961. The next prime is 21010672027. The reversal of 21010672011 is 11027601012.

It is a happy number.

It is not a de Polignac number, because 21010672011 - 2⁹ = 21010671499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (21010672051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154990 + ... + 256988.

It is an arithmetic number, because the mean of its divisors is an integer number (1061208000).

Almost surely, 2^21010672011 is an apocalyptic number.

21010672011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21010672011 is a deficient number, since it is larger than the sum of its proper divisors (12947983989).

21010672011 is a wasteful number, since it uses less digits than its factorization.

21010672011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102603.

The product of its (nonzero) digits is 168, while the sum is 21.

The spelling of 21010672011 in words is "twenty-one billion, ten million, six hundred seventy-two thousand, eleven".