21224544556054 has 16 divisors (see below), whose sum is σ = 36385569083808. Its totient is φ = 9096074491392.

The previous prime is 21224544555967. The next prime is 21224544556079. The reversal of 21224544556054 is 45065544542212.

It is a super-2 number, since 2×21224544556054² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21224544555989 and 21224544556007.

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, 12408907 + ... + 14015350.

It is an arithmetic number, because the mean of its divisors is an integer number (2274098067738).

Almost surely, 2^{21224544556054} is an apocalyptic number.

21224544556054 is a deficient number, since it is larger than the sum of its proper divisors (15161024527754).

21224544556054 is a wasteful number, since it uses less digits than its factorization.

21224544556054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26481639.

The product of its (nonzero) digits is 7680000, while the sum is 49.

The spelling of 21224544556054 in words is "twenty-one trillion, two hundred twenty-four billion, five hundred forty-four million, five hundred fifty-six thousand, fifty-four".