100342011421 has 2 divisors, whose sum is σ = 100342011422. Its totient is φ = 100342011420.

The previous prime is 100342011401. The next prime is 100342011433. The reversal of 100342011421 is 124110243001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100163388196 + 178623225 = 316486^2 + 13365^2 .

It is a cyclic number.

It is not a de Polignac number, because 100342011421 - 2⁵ = 100342011389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100342011401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50171005710 + 50171005711.

It is an arithmetic number, because the mean of its divisors is an integer number (50171005711).

Almost surely, 2^100342011421 is an apocalyptic number.

It is an amenable number.

100342011421 is a deficient number, since it is larger than the sum of its proper divisors (1).

100342011421 is an equidigital number, since it uses as much as digits as its factorization.

100342011421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 100342011421 its reverse (124110243001), we get a palindrome (224452254422).

The spelling of 100342011421 in words is "one hundred billion, three hundred forty-two million, eleven thousand, four hundred twenty-one".