100420104021 has 16 divisors (see below), whose sum is σ = 134033592000. Its totient is φ = 66876720768.

The previous prime is 100420104019. The next prime is 100420104049. The reversal of 100420104021 is 120401024001.

It is not a de Polignac number, because 100420104021 - 2¹ = 100420104019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100420104011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14964615 + ... + 14971323.

It is an arithmetic number, because the mean of its divisors is an integer number (8377099500).

Almost surely, 2^100420104021 is an apocalyptic number.

It is an amenable number.

100420104021 is a deficient number, since it is larger than the sum of its proper divisors (33613487979).

100420104021 is a wasteful number, since it uses less digits than its factorization.

100420104021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11188.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 100420104021 its reverse (120401024001), we get a palindrome (220821128022).

The spelling of 100420104021 in words is "one hundred billion, four hundred twenty million, one hundred four thousand, twenty-one".