21310071006170 has 16 divisors (see below), whose sum is σ = 38387033733888. Its totient is φ = 8517604864080.

The previous prime is 21310071006143. The next prime is 21310071006173. The reversal of 21310071006170 is 7160017001312.

It is not an unprimeable number, because it can be changed into a prime (21310071006173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 802928366 + ... + 802954905.

It is an arithmetic number, because the mean of its divisors is an integer number (2399189608368).

Almost surely, 2^{21310071006170} is an apocalyptic number.

21310071006170 is a deficient number, since it is larger than the sum of its proper divisors (17076962727718).

21310071006170 is a wasteful number, since it uses less digits than its factorization.

21310071006170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605884605.

The product of its (nonzero) digits is 1764, while the sum is 29.

Adding to 21310071006170 its reverse (7160017001312), we get a palindrome (28470088007482).

The spelling of 21310071006170 in words is "twenty-one trillion, three hundred ten billion, seventy-one million, six thousand, one hundred seventy".