213212223011 has 4 divisors (see below), whose sum is σ = 213241871832. Its totient is φ = 213182574192.

The previous prime is 213212222999. The next prime is 213212223079. The reversal of 213212223011 is 110322212312.

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

It is a cyclic number.

It is not a de Polignac number, because 213212223011 - 2⁶ = 213212222947 is a prime.

It is a super-2 number, since 2×213212223011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213212223911) 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, 14813621 + ... + 14828006.

It is an arithmetic number, because the mean of its divisors is an integer number (53310467958).

Almost surely, 2^213212223011 is an apocalyptic number.

213212223011 is a deficient number, since it is larger than the sum of its proper divisors (29648821).

213212223011 is an equidigital number, since it uses as much as digits as its factorization.

213212223011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29648820.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 213212223011 its reverse (110322212312), we get a palindrome (323534435323).

The spelling of 213212223011 in words is "two hundred thirteen billion, two hundred twelve million, two hundred twenty-three thousand, eleven".