222121121111110 has 32 divisors (see below), whose sum is σ = 430574006806272. Its totient is φ = 82013808286080.

The previous prime is 222121121111083. The next prime is 222121121111159. The reversal of 222121121111110 is 11111121121222.

It is a congruent number.

It is an unprimeable number.

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, 98054155 + ... + 100293865.

It is an arithmetic number, because the mean of its divisors is an integer number (13455437712696).

Almost surely, 2^{222121121111110} is an apocalyptic number.

222121121111110 is a deficient number, since it is larger than the sum of its proper divisors (208452885695162).

222121121111110 is a wasteful number, since it uses less digits than its factorization.

222121121111110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002608.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 222121121111110 its reverse (11111121121222), we get a palindrome (233232242232332).

The spelling of 222121121111110 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred eleven thousand, one hundred ten".