211012021213 has 4 divisors (see below), whose sum is σ = 241156595680. Its totient is φ = 180867446748.

The previous prime is 211012021189. The next prime is 211012021217. The reversal of 211012021213 is 312120210112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211012021213 - 2²¹ = 211009924061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012021217) 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, 15072287223 + ... + 15072287236.

It is an arithmetic number, because the mean of its divisors is an integer number (60289148920).

Almost surely, 2^211012021213 is an apocalyptic number.

It is an amenable number.

211012021213 is a deficient number, since it is larger than the sum of its proper divisors (30144574467).

211012021213 is an equidigital number, since it uses as much as digits as its factorization.

211012021213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30144574466.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 211012021213 its reverse (312120210112), we get a palindrome (523132231325).

The spelling of 211012021213 in words is "two hundred eleven billion, twelve million, twenty-one thousand, two hundred thirteen".