220102012121111 has 4 divisors (see below), whose sum is σ = 225220663565832. Its totient is φ = 214983360676392.

The previous prime is 220102012121099. The next prime is 220102012121143. The reversal of 220102012121111 is 111121210201022.

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 220102012121111 - 2²⁶ = 220101945012247 is a prime.

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 220102012121111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220102012151111) 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, 2559325722296 + ... + 2559325722381.

It is an arithmetic number, because the mean of its divisors is an integer number (56305165891458).

Almost surely, 2^{220102012121111} is an apocalyptic number.

220102012121111 is a deficient number, since it is larger than the sum of its proper divisors (5118651444721).

220102012121111 is an equidigital number, since it uses as much as digits as its factorization.

220102012121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118651444720.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 220102012121111 its reverse (111121210201022), we get a palindrome (331223222322133).

The spelling of 220102012121111 in words is "two hundred twenty trillion, one hundred two billion, twelve million, one hundred twenty-one thousand, one hundred eleven".