222212120111 has 8 divisors (see below), whose sum is σ = 235318179744. Its totient is φ = 209109922560.

The previous prime is 222212120093. The next prime is 222212120131. The reversal of 222212120111 is 111021212222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222212120111 - 2⁶ = 222212120047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 222212120111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222212120131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846635 + ... + 1077596.

It is an arithmetic number, because the mean of its divisors is an integer number (29414772468).

Almost surely, 2^222212120111 is an apocalyptic number.

222212120111 is a deficient number, since it is larger than the sum of its proper divisors (13106059633).

222212120111 is a wasteful number, since it uses less digits than its factorization.

222212120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931041.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222212120111 its reverse (111021212222), we get a palindrome (333233332333).

The spelling of 222212120111 in words is "two hundred twenty-two billion, two hundred twelve million, one hundred twenty thousand, one hundred eleven".