21170145114 has 48 divisors (see below), whose sum is σ = 46097251200. Its totient is φ = 7021637568.

The previous prime is 21170145109. The next prime is 21170145119. The reversal of 21170145114 is 41154107112.

It is an interprime number because it is at equal distance from previous prime (21170145109) and next prime (21170145119).

It is not an unprimeable number, because it can be changed into a prime (21170145119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3081247 + ... + 3088109.

It is an arithmetic number, because the mean of its divisors is an integer number (960359400).

Almost surely, 2^21170145114 is an apocalyptic number.

21170145114 is an abundant number, since it is smaller than the sum of its proper divisors (24927106086).

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

21170145114 is a wasteful number, since it uses less digits than its factorization.

21170145114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7699 (or 7696 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The spelling of 21170145114 in words is "twenty-one billion, one hundred seventy million, one hundred forty-five thousand, one hundred fourteen".