21112445414 has 16 divisors (see below), whose sum is σ = 31720169376. Its totient is φ = 10539072000.

The previous prime is 21112445383. The next prime is 21112445423. The reversal of 21112445414 is 41454421112.

It is a congruent number.

It is an unprimeable number.

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, 3942839 + ... + 3948189.

It is an arithmetic number, because the mean of its divisors is an integer number (1982510586).

Almost surely, 2^21112445414 is an apocalyptic number.

21112445414 is a deficient number, since it is larger than the sum of its proper divisors (10607723962).

21112445414 is a wasteful number, since it uses less digits than its factorization.

21112445414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8191.

The product of its digits is 5120, while the sum is 29.

Adding to 21112445414 its reverse (41454421112), we get a palindrome (62566866526).

The spelling of 21112445414 in words is "twenty-one billion, one hundred twelve million, four hundred forty-five thousand, four hundred fourteen".