212220222111 has 12 divisors (see below), whose sum is σ = 306861991488. Its totient is φ = 141331684704.

The previous prime is 212220222079. The next prime is 212220222187. The reversal of 212220222111 is 111222022212.

It is a happy number.

212220222111 is a `hidden beast` number, since 212 + 220 + 2 + 221 + 11 = 666.

It is not a de Polignac number, because 212220222111 - 2⁵ = 212220222079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220222911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12362895 + ... + 12380048.

It is an arithmetic number, because the mean of its divisors is an integer number (25571832624).

Almost surely, 2^212220222111 is an apocalyptic number.

212220222111 is a deficient number, since it is larger than the sum of its proper divisors (94641769377).

212220222111 is a wasteful number, since it uses less digits than its factorization.

212220222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24743902 (or 24743899 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 212220222111 its reverse (111222022212), we get a palindrome (323442244323).

It can be divided in two parts, 21222022211 and 1, that added together give a palindrome (21222022212).

The spelling of 212220222111 in words is "two hundred twelve billion, two hundred twenty million, two hundred twenty-two thousand, one hundred eleven".