2011020221213 has 4 divisors (see below), whose sum is σ = 2031752388540. Its totient is φ = 1990288053888.

The previous prime is 2011020221191. The next prime is 2011020221233. The reversal of 2011020221213 is 3121220201102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 947075419684 + 1063944801529 = 973178^2 + 1031477^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011020221213 - 2¹⁴ = 2011020204829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011020221191 and 2011020221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011020221233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10366083518 + ... + 10366083711.

It is an arithmetic number, because the mean of its divisors is an integer number (507938097135).

Almost surely, 2^{2011020221213} is an apocalyptic number.

It is an amenable number.

2011020221213 is a deficient number, since it is larger than the sum of its proper divisors (20732167327).

2011020221213 is an equidigital number, since it uses as much as digits as its factorization.

2011020221213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20732167326.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2011020221213 its reverse (3121220201102), we get a palindrome (5132240422315).

The spelling of 2011020221213 in words is "two trillion, eleven billion, twenty million, two hundred twenty-one thousand, two hundred thirteen".