122201111022210 has 192 divisors, whose sum is σ = 356001207494400. Its totient is φ = 28821689879040.

The previous prime is 122201111022197. The next prime is 122201111022343. The reversal of 122201111022210 is 12220111102221.

122201111022210 is a `hidden beast` number, since 12 + 220 + 111 + 102 + 221 + 0 = 666.

It is a super-2 number, since 2×122201111022210² (a number of 29 digits) contains 22 as substring.

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

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, 518159979 + ... + 518395761.

It is an arithmetic number, because the mean of its divisors is an integer number (1854172955700).

Almost surely, 2^{122201111022210} is an apocalyptic number.

122201111022210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122201111022210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178000603747200).

122201111022210 is an abundant number, since it is smaller than the sum of its proper divisors (233800096472190).

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

122201111022210 is a wasteful number, since it uses less digits than its factorization.

122201111022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249993 (or 249990 counting only the distinct ones).

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

Adding to 122201111022210 its reverse (12220111102221), we get a palindrome (134421222124431).

It can be divided in two parts, 12220111 and 1022210, that added together give a square (13242321 = 3639²).

The spelling of 122201111022210 in words is "one hundred twenty-two trillion, two hundred one billion, one hundred eleven million, twenty-two thousand, two hundred ten".