21214233631546 has 16 divisors (see below), whose sum is σ = 31956792739200. Its totient is φ = 10561975770528.

The previous prime is 21214233631511. The next prime is 21214233631561. The reversal of 21214233631546 is 64513633241212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5085070 + ... + 8263558.

It is an arithmetic number, because the mean of its divisors is an integer number (1997299546200).

Almost surely, 2^{21214233631546} is an apocalyptic number.

21214233631546 is a deficient number, since it is larger than the sum of its proper divisors (10742559107654).

21214233631546 is a wasteful number, since it uses less digits than its factorization.

21214233631546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192693.

The product of its digits is 622080, while the sum is 43.

Adding to 21214233631546 its reverse (64513633241212), we get a palindrome (85727866872758).

The spelling of 21214233631546 in words is "twenty-one trillion, two hundred fourteen billion, two hundred thirty-three million, six hundred thirty-one thousand, five hundred forty-six".