21224021301043 has 16 divisors (see below), whose sum is σ = 24072199724160. Its totient is φ = 18543010939200.

The previous prime is 21224021301013. The next prime is 21224021301059. The reversal of 21224021301043 is 34010312042212.

It is not a de Polignac number, because 21224021301043 - 2²⁹ = 21223484430131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21224021300999 and 21224021301017.

It is not an unprimeable number, because it can be changed into a prime (21224021301013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351163173 + ... + 351223606.

It is an arithmetic number, because the mean of its divisors is an integer number (1504512482760).

Almost surely, 2^{21224021301043} is an apocalyptic number.

21224021301043 is a deficient number, since it is larger than the sum of its proper divisors (2848178423117).

21224021301043 is a wasteful number, since it uses less digits than its factorization.

21224021301043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702386898.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21224021301043 its reverse (34010312042212), we get a palindrome (55234333343255).

The spelling of 21224021301043 in words is "twenty-one trillion, two hundred twenty-four billion, twenty-one million, three hundred one thousand, forty-three".