20011011213 has 8 divisors (see below), whose sum is σ = 26828759776. Its totient is φ = 13266968400.

The previous prime is 20011011211. The next prime is 20011011227. The reversal of 20011011213 is 31211011002.

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

It is not a de Polignac number, because 20011011213 - 2¹ = 20011011211 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 (20011011211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18425803 + ... + 18426888.

It is an arithmetic number, because the mean of its divisors is an integer number (3353594972).

Almost surely, 2^20011011213 is an apocalyptic number.

It is an amenable number.

20011011213 is a deficient number, since it is larger than the sum of its proper divisors (6817748563).

20011011213 is a wasteful number, since it uses less digits than its factorization.

20011011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36852875.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 20011011213 its reverse (31211011002), we get a palindrome (51222022215).

The spelling of 20011011213 in words is "twenty billion, eleven million, eleven thousand, two hundred thirteen".