21110163279 has 8 divisors (see below), whose sum is σ = 29054848512. Its totient is φ = 13619460120.

The previous prime is 21110163259. The next prime is 21110163299. The reversal of 21110163279 is 97236101112.

It is an interprime number because it is at equal distance from previous prime (21110163259) and next prime (21110163299).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21110163279 - 2⁸ = 21110163023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110163259) 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, 113495409 + ... + 113495594.

It is an arithmetic number, because the mean of its divisors is an integer number (3631856064).

Almost surely, 2^21110163279 is an apocalyptic number.

21110163279 is a deficient number, since it is larger than the sum of its proper divisors (7944685233).

21110163279 is a wasteful number, since it uses less digits than its factorization.

21110163279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226991037.

The product of its (nonzero) digits is 4536, while the sum is 33.

The spelling of 21110163279 in words is "twenty-one billion, one hundred ten million, one hundred sixty-three thousand, two hundred seventy-nine".