213213012011 has 32 divisors (see below), whose sum is σ = 238067786880. Its totient is φ = 189916379136.

The previous prime is 213213011993. The next prime is 213213012049. The reversal of 213213012011 is 110210312312.

It is a cyclic number.

It is not a de Polignac number, because 213213012011 - 2²⁶ = 213145903147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213213012611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33964205 + ... + 33970481.

It is an arithmetic number, because the mean of its divisors is an integer number (7439618340).

Almost surely, 2^213213012011 is an apocalyptic number.

213213012011 is a deficient number, since it is larger than the sum of its proper divisors (24854774869).

213213012011 is a wasteful number, since it uses less digits than its factorization.

213213012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7223.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 213213012011 its reverse (110210312312), we get a palindrome (323423324323).

The spelling of 213213012011 in words is "two hundred thirteen billion, two hundred thirteen million, twelve thousand, eleven".