222121221112011 has 16 divisors (see below), whose sum is σ = 319982195101184. Its totient is φ = 136244737973664.

The previous prime is 222121221112009. The next prime is 222121221112013. The reversal of 222121221112011 is 110211122121222.

It is an interprime number because it is at equal distance from previous prime (222121221112009) and next prime (222121221112013).

It is not a de Polignac number, because 222121221112011 - 2¹ = 222121221112009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222121221112013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9275909731 + ... + 9275933676.

It is an arithmetic number, because the mean of its divisors is an integer number (19998887193824).

Almost surely, 2^{222121221112011} is an apocalyptic number.

222121221112011 is a deficient number, since it is larger than the sum of its proper divisors (97860973989173).

222121221112011 is a wasteful number, since it uses less digits than its factorization.

222121221112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18551843730.

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

Adding to 222121221112011 its reverse (110211122121222), we get a palindrome (332332343233233).

The spelling of 222121221112011 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred twelve thousand, eleven".