10400100421 has 16 divisors (see below), whose sum is σ = 11051546688. Its totient is φ = 9753145600.

The previous prime is 10400100397. The next prime is 10400100457. The reversal of 10400100421 is 12400100401.

10400100421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10400100421 - 2¹⁹ = 10399576133 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 (10400100481) 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 15 ways as a sum of consecutive naturals, for example, 9532086 + ... + 9533176.

It is an arithmetic number, because the mean of its divisors is an integer number (690721668).

Almost surely, 2^10400100421 is an apocalyptic number.

It is an amenable number.

10400100421 is a deficient number, since it is larger than the sum of its proper divisors (651446267).

10400100421 is a wasteful number, since it uses less digits than its factorization.

10400100421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2612.

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

Adding to 10400100421 its reverse (12400100401), we get a palindrome (22800200822).

The spelling of 10400100421 in words is "ten billion, four hundred million, one hundred thousand, four hundred twenty-one".