21214554414024 has 32 divisors (see below), whose sum is σ = 53039309400000. Its totient is φ = 7071128356032.

The previous prime is 21214554414023. The next prime is 21214554414041. The reversal of 21214554414024 is 42041445541212.

It is not an unprimeable number, because it can be changed into a prime (21214554414023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23916724 + ... + 24787875.

It is an arithmetic number, because the mean of its divisors is an integer number (1657478418750).

Almost surely, 2^{21214554414024} is an apocalyptic number.

21214554414024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21214554414024 is an abundant number, since it is smaller than the sum of its proper divisors (31824754985976).

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

21214554414024 is a wasteful number, since it uses less digits than its factorization.

21214554414024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48722757 (or 48722753 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 39.

Adding to 21214554414024 its reverse (42041445541212), we get a palindrome (63255999955236).

The spelling of 21214554414024 in words is "twenty-one trillion, two hundred fourteen billion, five hundred fifty-four million, four hundred fourteen thousand, twenty-four".