100421413012421 has 2 divisors, whose sum is σ = 100421413012422. Its totient is φ = 100421413012420.

The previous prime is 100421413012357. The next prime is 100421413012469. The reversal of 100421413012421 is 124210314124001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67268703062500 + 33152709949921 = 8201750^2 + 5757839^2 .

It is a cyclic number.

It is not a de Polignac number, because 100421413012421 - 2⁶ = 100421413012357 is a prime.

It is a super-2 number, since 2×100421413012421² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100421413012621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50210706506210 + 50210706506211.

It is an arithmetic number, because the mean of its divisors is an integer number (50210706506211).

Almost surely, 2^{100421413012421} is an apocalyptic number.

It is an amenable number.

100421413012421 is a deficient number, since it is larger than the sum of its proper divisors (1).

100421413012421 is an equidigital number, since it uses as much as digits as its factorization.

100421413012421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 100421413012421 its reverse (124210314124001), we get a palindrome (224631727136422).

The spelling of 100421413012421 in words is "one hundred trillion, four hundred twenty-one billion, four hundred thirteen million, twelve thousand, four hundred twenty-one".