10020001421 has 8 divisors (see below), whose sum is σ = 10046062488. Its totient is φ = 9993960000.

The previous prime is 10020001403. The next prime is 10020001441. The reversal of 10020001421 is 12410002001.

10020001421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 471975625 + 9548025796 = 21725^2 + 97714^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10020001421 - 2¹⁸ = 10019739277 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 (10020001441) 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 in 7 ways as a sum of consecutive naturals, for example, 1961771 + ... + 1966871.

It is an arithmetic number, because the mean of its divisors is an integer number (1255757811).

Almost surely, 2^10020001421 is an apocalyptic number.

It is an amenable number.

10020001421 is a deficient number, since it is larger than the sum of its proper divisors (26061067).

10020001421 is an equidigital number, since it uses as much as digits as its factorization.

10020001421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9823.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10020001421 its reverse (12410002001), we get a palindrome (22430003422).

The spelling of 10020001421 in words is "ten billion, twenty million, one thousand, four hundred twenty-one".