21224561550103 has 8 divisors (see below), whose sum is σ = 21281073616656. Its totient is φ = 21168103488000.

The previous prime is 21224561550097. The next prime is 21224561550113. The reversal of 21224561550103 is 30105516542212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21224561550103 - 2²⁹ = 21224024679191 is a prime.

It is a super-2 number, since 2×21224561550103² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21224561550113) 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, 12713976 + ... + 14286157.

It is an arithmetic number, because the mean of its divisors is an integer number (2660134202082).

Almost surely, 2^{21224561550103} is an apocalyptic number.

21224561550103 is a deficient number, since it is larger than the sum of its proper divisors (56512066553).

21224561550103 is a wasteful number, since it uses less digits than its factorization.

21224561550103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27002225.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 21224561550103 in words is "twenty-one trillion, two hundred twenty-four billion, five hundred sixty-one million, five hundred fifty thousand, one hundred three".