100321150421 has 2 divisors, whose sum is σ = 100321150422. Its totient is φ = 100321150420.

The previous prime is 100321150411. The next prime is 100321150441. The reversal of 100321150421 is 124051123001.

It is an a-pointer prime, because the next prime (100321150441) can be obtained adding 100321150421 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97899526321 + 2421624100 = 312889^2 + 49210^2 .

It is a cyclic number.

It is not a de Polignac number, because 100321150421 - 2³⁰ = 99247408597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100321150393 and 100321150402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100321150411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50160575210 + 50160575211.

It is an arithmetic number, because the mean of its divisors is an integer number (50160575211).

Almost surely, 2^100321150421 is an apocalyptic number.

It is an amenable number.

100321150421 is a deficient number, since it is larger than the sum of its proper divisors (1).

100321150421 is an equidigital number, since it uses as much as digits as its factorization.

100321150421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 100321150421 its reverse (124051123001), we get a palindrome (224372273422).

The spelling of 100321150421 in words is "one hundred billion, three hundred twenty-one million, one hundred fifty thousand, four hundred twenty-one".