100100011421 has 2 divisors, whose sum is σ = 100100011422. Its totient is φ = 100100011420.

The previous prime is 100100011411. The next prime is 100100011441. The reversal of 100100011421 is 124110001001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86664883321 + 13435128100 = 294389^2 + 115910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100100011421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100100011411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50050005710 + 50050005711.

It is an arithmetic number, because the mean of its divisors is an integer number (50050005711).

Almost surely, 2^100100011421 is an apocalyptic number.

It is an amenable number.

100100011421 is a deficient number, since it is larger than the sum of its proper divisors (1).

100100011421 is an equidigital number, since it uses as much as digits as its factorization.

100100011421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100100011421 its reverse (124110001001), we get a palindrome (224210012422).

The spelling of 100100011421 in words is "one hundred billion, one hundred million, eleven thousand, four hundred twenty-one".