100420214421 has 4 divisors (see below), whose sum is σ = 133893619232. Its totient is φ = 66946809612.

The previous prime is 100420214347. The next prime is 100420214423. The reversal of 100420214421 is 124412024001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 100420214421 - 2²⁶ = 100353105557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100420214423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16736702401 + ... + 16736702406.

It is an arithmetic number, because the mean of its divisors is an integer number (33473404808).

Almost surely, 2^100420214421 is an apocalyptic number.

It is an amenable number.

100420214421 is a deficient number, since it is larger than the sum of its proper divisors (33473404811).

100420214421 is an equidigital number, since it uses as much as digits as its factorization.

100420214421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33473404810.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 100420214421 its reverse (124412024001), we get a palindrome (224832238422).

The spelling of 100420214421 in words is "one hundred billion, four hundred twenty million, two hundred fourteen thousand, four hundred twenty-one".