21141110166 has 16 divisors (see below), whose sum is σ = 46126058688. Its totient is φ = 6406397000.

The previous prime is 21141110161. The next prime is 21141110167. The reversal of 21141110166 is 66101114112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21141110161) 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, 160159860 + ... + 160159991.

It is an arithmetic number, because the mean of its divisors is an integer number (2882878668).

Almost surely, 2^21141110166 is an apocalyptic number.

21141110166 is an abundant number, since it is smaller than the sum of its proper divisors (24984948522).

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

21141110166 is a wasteful number, since it uses less digits than its factorization.

21141110166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320319867.

The product of its (nonzero) digits is 288, while the sum is 24.

Adding to 21141110166 its reverse (66101114112), we get a palindrome (87242224278).

The spelling of 21141110166 in words is "twenty-one billion, one hundred forty-one million, one hundred ten thousand, one hundred sixty-six".