224101132421 has 2 divisors, whose sum is σ = 224101132422. Its totient is φ = 224101132420.

The previous prime is 224101132403. The next prime is 224101132499. The reversal of 224101132421 is 124231101422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133553702500 + 90547429921 = 365450^2 + 300911^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224101132421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224101182421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112050566210 + 112050566211.

It is an arithmetic number, because the mean of its divisors is an integer number (112050566211).

Almost surely, 2^224101132421 is an apocalyptic number.

It is an amenable number.

224101132421 is a deficient number, since it is larger than the sum of its proper divisors (1).

224101132421 is an equidigital number, since it uses as much as digits as its factorization.

224101132421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 224101132421 its reverse (124231101422), we get a palindrome (348332233843).

The spelling of 224101132421 in words is "two hundred twenty-four billion, one hundred one million, one hundred thirty-two thousand, four hundred twenty-one".