21214554414004 has 24 divisors (see below), whose sum is σ = 42502642844480. Its totient is φ = 9076194602496.

The previous prime is 21214554413957. The next prime is 21214554414013. The reversal of 21214554414004 is 40041445541212.

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, 656537274 + ... + 656569585.

Almost surely, 2^{21214554414004} is an apocalyptic number.

It is an amenable number.

21214554414004 is an abundant number, since it is smaller than the sum of its proper divisors (21288088430476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21214554414004 is a wasteful number, since it uses less digits than its factorization.

21214554414004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313107447 (or 1313107445 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 37.

Adding to 21214554414004 its reverse (40041445541212), we get a palindrome (61255999955216).

The spelling of 21214554414004 in words is "twenty-one trillion, two hundred fourteen billion, five hundred fifty-four million, four hundred fourteen thousand, four".