100010202421 has 2 divisors, whose sum is σ = 100010202422. Its totient is φ = 100010202420.

The previous prime is 100010202419. The next prime is 100010202449. The reversal of 100010202421 is 124202010001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90018000900 + 9992201521 = 300030^2 + 99961^2 .

It is a cyclic number.

It is not a de Polignac number, because 100010202421 - 2¹ = 100010202419 is a prime.

It is a super-2 number, since 2×100010202421² (a number of 23 digits) contains 22 as substring.

Together with 100010202419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100010202821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50005101210 + 50005101211.

It is an arithmetic number, because the mean of its divisors is an integer number (50005101211).

Almost surely, 2^100010202421 is an apocalyptic number.

It is an amenable number.

100010202421 is a deficient number, since it is larger than the sum of its proper divisors (1).

100010202421 is an equidigital number, since it uses as much as digits as its factorization.

100010202421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 100010202421 its reverse (124202010001), we get a palindrome (224212212422).

The spelling of 100010202421 in words is "one hundred billion, ten million, two hundred two thousand, four hundred twenty-one".