222131232011 has 4 divisors (see below), whose sum is σ = 239218249872. Its totient is φ = 205044214152.

The previous prime is 222131231989. The next prime is 222131232067. The reversal of 222131232011 is 110232131222.

222131232011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222131232011 is a prime.

It is a super-2 number, since 2×222131232011² (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 (222131232091) 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 3 ways as a sum of consecutive naturals, for example, 8543508911 + ... + 8543508936.

It is an arithmetic number, because the mean of its divisors is an integer number (59804562468).

Almost surely, 2^222131232011 is an apocalyptic number.

222131232011 is a deficient number, since it is larger than the sum of its proper divisors (17087017861).

222131232011 is a wasteful number, since it uses less digits than its factorization.

222131232011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17087017860.

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

Adding to 222131232011 its reverse (110232131222), we get a palindrome (332363363233).

The spelling of 222131232011 in words is "two hundred twenty-two billion, one hundred thirty-one million, two hundred thirty-two thousand, eleven".