21214050346454 has 16 divisors (see below), whose sum is σ = 36367443319200. Its totient is φ = 9091610895744.

The previous prime is 21214050346421. The next prime is 21214050346471. The reversal of 21214050346454 is 45464305041212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9355289 + ... + 11399540.

It is an arithmetic number, because the mean of its divisors is an integer number (2272965207450).

Almost surely, 2^{21214050346454} is an apocalyptic number.

21214050346454 is a deficient number, since it is larger than the sum of its proper divisors (15153392972746).

21214050346454 is a wasteful number, since it uses less digits than its factorization.

21214050346454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20827847.

The product of its (nonzero) digits is 460800, while the sum is 41.

Adding to 21214050346454 its reverse (45464305041212), we get a palindrome (66678355387666).

The spelling of 21214050346454 in words is "twenty-one trillion, two hundred fourteen billion, fifty million, three hundred forty-six thousand, four hundred fifty-four".