222120111001111 has 4 divisors (see below), whose sum is σ = 226311056491752. Its totient is φ = 217929165510472.

The previous prime is 222120111001049. The next prime is 222120111001163. The reversal of 222120111001111 is 111100111021222.

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

It is a cyclic number.

It is not a de Polignac number, because 222120111001111 - 2¹¹ = 222120110999063 is a prime.

It is a super-2 number, since 2×222120111001111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120111004111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2095472745241 + ... + 2095472745346.

It is an arithmetic number, because the mean of its divisors is an integer number (56577764122938).

Almost surely, 2^{222120111001111} is an apocalyptic number.

222120111001111 is a deficient number, since it is larger than the sum of its proper divisors (4190945490641).

222120111001111 is an equidigital number, since it uses as much as digits as its factorization.

222120111001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4190945490640.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 222120111001111 its reverse (111100111021222), we get a palindrome (333220222022333).

The spelling of 222120111001111 in words is "two hundred twenty-two trillion, one hundred twenty billion, one hundred eleven million, one thousand, one hundred eleven".