222111222121011 has 4 divisors (see below), whose sum is σ = 296148296161352. Its totient is φ = 148074148080672.

The previous prime is 222111222120967. The next prime is 222111222121111. The reversal of 222111222121011 is 110121222111222.

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

It is not a de Polignac number, because 222111222121011 - 2¹⁰ = 222111222119987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222111222121111) 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, 37018537020166 + ... + 37018537020171.

It is an arithmetic number, because the mean of its divisors is an integer number (74037074040338).

Almost surely, 2^{222111222121011} is an apocalyptic number.

222111222121011 is a deficient number, since it is larger than the sum of its proper divisors (74037074040341).

222111222121011 is an equidigital number, since it uses as much as digits as its factorization.

222111222121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74037074040340.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 222111222121011 its reverse (110121222111222), we get a palindrome (332232444232233).

The spelling of 222111222121011 in words is "two hundred twenty-two trillion, one hundred eleven billion, two hundred twenty-two million, one hundred twenty-one thousand, eleven".