212213231011 has 4 divisors (see below), whose sum is σ = 212214628800. Its totient is φ = 212211833224.

The previous prime is 212213230997. The next prime is 212213231023. The reversal of 212213231011 is 110132312212.

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 212213231011 - 2¹¹ = 212213228963 is a prime.

It is a super-2 number, since 2×212213231011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212213231011.

It is not an unprimeable number, because it can be changed into a prime (212213231071) 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, 438931 + ... + 785548.

It is an arithmetic number, because the mean of its divisors is an integer number (53053657200).

Almost surely, 2^212213231011 is an apocalyptic number.

212213231011 is a deficient number, since it is larger than the sum of its proper divisors (1397789).

212213231011 is a wasteful number, since it uses less digits than its factorization.

212213231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397788.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 212213231011 its reverse (110132312212), we get a palindrome (322345543223).

The spelling of 212213231011 in words is "two hundred twelve billion, two hundred thirteen million, two hundred thirty-one thousand, eleven".