20100421424213 has 6 divisors (see below), whose sum is σ = 21765545092674. Its totient is φ = 18554235160656.

The previous prime is 20100421424203. The next prime is 20100421424261. The reversal of 20100421424213 is 31242412400102.

It can be written as a sum of positive squares in 3 ways, for example, as 2304831039889 + 17795590384324 = 1518167^2 + 4218482^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20100421424213 is a prime.

It is a super-3 number, since 3×20100421424213³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100421424203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59468702270 + ... + 59468702607.

It is an arithmetic number, because the mean of its divisors is an integer number (3627590848779).

Almost surely, 2^{20100421424213} is an apocalyptic number.

It is an amenable number.

20100421424213 is a deficient number, since it is larger than the sum of its proper divisors (1665123668461).

20100421424213 is a wasteful number, since it uses less digits than its factorization.

20100421424213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118937404903 (or 118937404890 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 20100421424213 its reverse (31242412400102), we get a palindrome (51342833824315).

The spelling of 20100421424213 in words is "twenty trillion, one hundred billion, four hundred twenty-one million, four hundred twenty-four thousand, two hundred thirteen".