21112360144 has 20 divisors (see below), whose sum is σ = 41775522624. Its totient is φ = 10331580128.

The previous prime is 21112360121. The next prime is 21112360153. The reversal of 21112360144 is 44106321112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14036722 + ... + 14038225.

Almost surely, 2^21112360144 is an apocalyptic number.

It is an amenable number.

21112360144 is a deficient number, since it is larger than the sum of its proper divisors (20663162480).

21112360144 is a wasteful number, since it uses less digits than its factorization.

21112360144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28075002 (or 28074996 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 21112360144 its reverse (44106321112), we get a palindrome (65218681256).

The spelling of 21112360144 in words is "twenty-one billion, one hundred twelve million, three hundred sixty thousand, one hundred forty-four".