222212220111 has 12 divisors (see below), whose sum is σ = 366826522192. Its totient is φ = 126978411456.

The previous prime is 222212220073. The next prime is 222212220143. The reversal of 222212220111 is 111022212222.

It is a happy number.

222212220111 is a `hidden beast` number, since 222 + 212 + 220 + 1 + 11 = 666.

It is not a de Polignac number, because 222212220111 - 2⁶ = 222212220047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222212228111) 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, 1763588986 + ... + 1763589111.

Almost surely, 2^222212220111 is an apocalyptic number.

222212220111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

222212220111 is a deficient number, since it is larger than the sum of its proper divisors (144614302081).

222212220111 is a wasteful number, since it uses less digits than its factorization.

222212220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3527178110 (or 3527178107 counting only the distinct ones).

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

Adding to 222212220111 its reverse (111022212222), we get a palindrome (333234432333).

The spelling of 222212220111 in words is "two hundred twenty-two billion, two hundred twelve million, two hundred twenty thousand, one hundred eleven".