10421420213 has 4 divisors (see below), whose sum is σ = 10564179468. Its totient is φ = 10278660960.

The previous prime is 10421420203. The next prime is 10421420237. The reversal of 10421420213 is 31202412401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31202412401 = 8581 ⋅3636221.

It can be written as a sum of positive squares in 2 ways, for example, as 8735332369 + 1686087844 = 93463^2 + 41062^2 .

It is a cyclic number.

It is not a de Polignac number, because 10421420213 - 2⁴ = 10421420197 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 (10421420203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71379518 + ... + 71379663.

It is an arithmetic number, because the mean of its divisors is an integer number (2641044867).

Almost surely, 2^10421420213 is an apocalyptic number.

It is an amenable number.

10421420213 is a deficient number, since it is larger than the sum of its proper divisors (142759255).

10421420213 is an equidigital number, since it uses as much as digits as its factorization.

10421420213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142759254.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 10421420213 its reverse (31202412401), we get a palindrome (41623832614).

The spelling of 10421420213 in words is "ten billion, four hundred twenty-one million, four hundred twenty thousand, two hundred thirteen".