21424783221803 has 8 divisors (see below), whose sum is σ = 23817128743296. Its totient is φ = 19138764168000.

The previous prime is 21424783221799. The next prime is 21424783221827. The reversal of 21424783221803 is 30812238742412.

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 21424783221803 - 2² = 21424783221799 is a prime.

It is a super-2 number, since 2×21424783221803² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21424783221883) 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, 26581616498 + ... + 26581617303.

It is an arithmetic number, because the mean of its divisors is an integer number (2977141092912).

Almost surely, 2^{21424783221803} is an apocalyptic number.

21424783221803 is a deficient number, since it is larger than the sum of its proper divisors (2392345521493).

21424783221803 is a wasteful number, since it uses less digits than its factorization.

21424783221803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53163233845.

The product of its (nonzero) digits is 1032192, while the sum is 47.

The spelling of 21424783221803 in words is "twenty-one trillion, four hundred twenty-four billion, seven hundred eighty-three million, two hundred twenty-one thousand, eight hundred three".