10031210421 has 4 divisors (see below), whose sum is σ = 13374947232. Its totient is φ = 6687473612.

The previous prime is 10031210369. The next prime is 10031210473. The reversal of 10031210421 is 12401213001.

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 an interprime number because it is at equal distance from previous prime (10031210369) and next prime (10031210473).

It is a cyclic number.

It is not a de Polignac number, because 10031210421 - 2¹⁷ = 10031079349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10031210421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10031210491) 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, 1671868401 + ... + 1671868406.

It is an arithmetic number, because the mean of its divisors is an integer number (3343736808).

Almost surely, 2^10031210421 is an apocalyptic number.

It is an amenable number.

10031210421 is a deficient number, since it is larger than the sum of its proper divisors (3343736811).

10031210421 is an equidigital number, since it uses as much as digits as its factorization.

10031210421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3343736810.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 10031210421 its reverse (12401213001), we get a palindrome (22432423422).

The spelling of 10031210421 in words is "ten billion, thirty-one million, two hundred ten thousand, four hundred twenty-one".