20010220013 has 12 divisors (see below), whose sum is σ = 23716390140. Its totient is φ = 16827999552.

The previous prime is 20010220007. The next prime is 20010220051. The reversal of 20010220013 is 31002201002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14688955204 + 5321264809 = 121198^2 + 72947^2 .

It is not a de Polignac number, because 20010220013 - 2¹⁰ = 20010218989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010219976 and 20010220003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010270013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3849968 + ... + 3855161.

It is an arithmetic number, because the mean of its divisors is an integer number (1976365845).

Almost surely, 2^20010220013 is an apocalyptic number.

It is an amenable number.

20010220013 is a deficient number, since it is larger than the sum of its proper divisors (3706170127).

20010220013 is an equidigital number, since it uses as much as digits as its factorization.

20010220013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7705196 (or 7705189 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20010220013 its reverse (31002201002), we get a palindrome (51012421015).

The spelling of 20010220013 in words is "twenty billion, ten million, two hundred twenty thousand, thirteen".