20101420213 has 4 divisors (see below), whose sum is σ = 22973051680. Its totient is φ = 17229788748.

The previous prime is 20101420189. The next prime is 20101420217. The reversal of 20101420213 is 31202410102.

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 a cyclic number.

It is not a de Polignac number, because 20101420213 - 2²¹ = 20099323061 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 (20101420217) 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 3 ways as a sum of consecutive naturals, for example, 1435815723 + ... + 1435815736.

It is an arithmetic number, because the mean of its divisors is an integer number (5743262920).

Almost surely, 2^20101420213 is an apocalyptic number.

It is an amenable number.

20101420213 is a deficient number, since it is larger than the sum of its proper divisors (2871631467).

20101420213 is an equidigital number, since it uses as much as digits as its factorization.

20101420213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2871631466.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20101420213 its reverse (31202410102), we get a palindrome (51303830315).

The spelling of 20101420213 in words is "twenty billion, one hundred one million, four hundred twenty thousand, two hundred thirteen".