100441225421 has 2 divisors, whose sum is σ = 100441225422. Its totient is φ = 100441225420.

The previous prime is 100441225411. The next prime is 100441225459. The reversal of 100441225421 is 124522144001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98627402500 + 1813822921 = 314050^2 + 42589^2 .

It is a cyclic number.

It is not a de Polignac number, because 100441225421 - 2¹⁸ = 100440963277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100441225411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50220612710 + 50220612711.

It is an arithmetic number, because the mean of its divisors is an integer number (50220612711).

Almost surely, 2^100441225421 is an apocalyptic number.

It is an amenable number.

100441225421 is a deficient number, since it is larger than the sum of its proper divisors (1).

100441225421 is an equidigital number, since it uses as much as digits as its factorization.

100441225421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 100441225421 its reverse (124522144001), we get a palindrome (224963369422).

The spelling of 100441225421 in words is "one hundred billion, four hundred forty-one million, two hundred twenty-five thousand, four hundred twenty-one".