21116144026 has 16 divisors (see below), whose sum is σ = 31822929000. Its totient is φ = 10508617728.

The previous prime is 21116144011. The next prime is 21116144029. The reversal of 21116144026 is 62044161112.

It can be written as a sum of positive squares in 4 ways, for example, as 20707497801 + 408646225 = 143901^2 + 20215^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21116143985 and 21116144003.

It is not an unprimeable number, because it can be changed into a prime (21116144029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338536 + ... + 396028.

Almost surely, 2^21116144026 is an apocalyptic number.

21116144026 is a deficient number, since it is larger than the sum of its proper divisors (10706784974).

21116144026 is a wasteful number, since it uses less digits than its factorization.

21116144026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58353.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 21116144026 in words is "twenty-one billion, one hundred sixteen million, one hundred forty-four thousand, twenty-six".