20011332213 has 12 divisors (see below), whose sum is σ = 30605567148. Its totient is φ = 12556129920.

The previous prime is 20011332197. The next prime is 20011332221. The reversal of 20011332213 is 31223311002.

It can be written as a sum of positive squares in 2 ways, for example, as 17318033604 + 2693298609 = 131598^2 + 51897^2 .

It is not a de Polignac number, because 20011332213 - 2⁴ = 20011332197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011332223) 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, 65396358 + ... + 65396663.

It is an arithmetic number, because the mean of its divisors is an integer number (2550463929).

Almost surely, 2^20011332213 is an apocalyptic number.

It is an amenable number.

20011332213 is a deficient number, since it is larger than the sum of its proper divisors (10594234935).

20011332213 is a wasteful number, since it uses less digits than its factorization.

20011332213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130793044 (or 130793041 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20011332213 its reverse (31223311002), we get a palindrome (51234643215).

The spelling of 20011332213 in words is "twenty billion, eleven million, three hundred thirty-two thousand, two hundred thirteen".