20210420213 has 8 divisors (see below), whose sum is σ = 21330266400. Its totient is φ = 19096188048.

The previous prime is 20210420203. The next prime is 20210420231. The reversal of 20210420213 is 31202401202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20210420213 is a prime.

It is a super-2 number, since 2×20210420213² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20210420191 and 20210420200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210420203) 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 7 ways as a sum of consecutive naturals, for example, 1396106 + ... + 1410507.

It is an arithmetic number, because the mean of its divisors is an integer number (2666283300).

Almost surely, 2^20210420213 is an apocalyptic number.

It is an amenable number.

20210420213 is a deficient number, since it is larger than the sum of its proper divisors (1119846187).

20210420213 is a wasteful number, since it uses less digits than its factorization.

20210420213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807011.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20210420213 its reverse (31202401202), we get a palindrome (51412821415).

The spelling of 20210420213 in words is "twenty billion, two hundred ten million, four hundred twenty thousand, two hundred thirteen".