21170741106 has 16 divisors (see below), whose sum is σ = 42345176544. Its totient is φ = 7056297984.

The previous prime is 21170741093. The next prime is 21170741107. The reversal of 21170741106 is 60114707112.

It is not an unprimeable number, because it can be changed into a prime (21170741107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76431 + ... + 219506.

It is an arithmetic number, because the mean of its divisors is an integer number (2646573534).

Almost surely, 2^21170741106 is an apocalyptic number.

21170741106 is an abundant number, since it is smaller than the sum of its proper divisors (21174435438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21170741106 is a wasteful number, since it uses less digits than its factorization.

21170741106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307865.

The product of its (nonzero) digits is 2352, while the sum is 30.

The spelling of 21170741106 in words is "twenty-one billion, one hundred seventy million, seven hundred forty-one thousand, one hundred six".