21224441233001 has 4 divisors (see below), whose sum is σ = 21224450462292. Its totient is φ = 21224432003712.

The previous prime is 21224441232959. The next prime is 21224441233033. The reversal of 21224441233001 is 10033214442212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1690260010000 + 19534181223001 = 1300100^2 + 4419749^2 .

It is a cyclic number.

It is not a de Polignac number, because 21224441233001 - 2¹⁴ = 21224441216617 is a prime.

It is a super-2 number, since 2×21224441233001² (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 (21224441233301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1909025 + ... + 6789201.

It is an arithmetic number, because the mean of its divisors is an integer number (5306112615573).

Almost surely, 2^{21224441233001} is an apocalyptic number.

It is an amenable number.

21224441233001 is a deficient number, since it is larger than the sum of its proper divisors (9229291).

21224441233001 is an equidigital number, since it uses as much as digits as its factorization.

21224441233001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9229290.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 21224441233001 its reverse (10033214442212), we get a palindrome (31257655675213).

The spelling of 21224441233001 in words is "twenty-one trillion, two hundred twenty-four billion, four hundred forty-one million, two hundred thirty-three thousand, one".