220111102122210 has 192 divisors, whose sum is σ = 622359137207808. Its totient is φ = 53651965012992.

The previous prime is 220111102122169. The next prime is 220111102122251. The reversal of 220111102122210 is 12221201111022.

220111102122210 is a `hidden beast` number, since 220 + 1 + 1 + 1 + 10 + 212 + 221 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (220111102122169) and next prime (220111102122251).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon 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 95 ways as a sum of consecutive naturals, for example, 49245894 + ... + 53529246.

It is an arithmetic number, because the mean of its divisors is an integer number (3241453839624).

Almost surely, 2^{220111102122210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220111102122210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311179568603904).

220111102122210 is an abundant number, since it is smaller than the sum of its proper divisors (402248035085598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220111102122210 is a wasteful number, since it uses less digits than its factorization.

220111102122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4283809 (or 4283806 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 220111102122210 its reverse (12221201111022), we get a palindrome (232332303233232).

The spelling of 220111102122210 in words is "two hundred twenty trillion, one hundred eleven billion, one hundred two million, one hundred twenty-two thousand, two hundred ten".