212311111022 has 16 divisors (see below), whose sum is σ = 325456612800. Its totient is φ = 103850229600.

The previous prime is 212311110961. The next prime is 212311111073. The reversal of 212311111022 is 220111113212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6146729 + ... + 6181172.

It is an arithmetic number, because the mean of its divisors is an integer number (20341038300).

Almost surely, 2^212311111022 is an apocalyptic number.

212311111022 is a deficient number, since it is larger than the sum of its proper divisors (113145501778).

212311111022 is a wasteful number, since it uses less digits than its factorization.

212311111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12328091.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 212311111022 its reverse (220111113212), we get a palindrome (432422224234).

The spelling of 212311111022 in words is "two hundred twelve billion, three hundred eleven million, one hundred eleven thousand, twenty-two".