224012200021 has 4 divisors (see below), whose sum is σ = 229221786112. Its totient is φ = 218802613932.

The previous prime is 224012200007. The next prime is 224012200103. The reversal of 224012200021 is 120002210422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120002210422 = 2 ⋅60001105211.

It is a cyclic number.

It is not a de Polignac number, because 224012200021 - 2¹³ = 224012191829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 224012199968 and 224012200004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224012200721) 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, 2604792981 + ... + 2604793066.

It is an arithmetic number, because the mean of its divisors is an integer number (57305446528).

Almost surely, 2^224012200021 is an apocalyptic number.

It is an amenable number.

224012200021 is a deficient number, since it is larger than the sum of its proper divisors (5209586091).

224012200021 is an equidigital number, since it uses as much as digits as its factorization.

224012200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5209586090.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 224012200021 its reverse (120002210422), we get a palindrome (344014410443).

The spelling of 224012200021 in words is "two hundred twenty-four billion, twelve million, two hundred thousand, twenty-one".